Houston biotech company expands leadership as it commercializes sustainable products

joining the team

Nádia Skorupa Parachin joined Cemvita as vice president of industrial biotechnology. Photo courtesy of Cemvita

Houston-based biotech company Cemvita recently tapped two executives to help commercialize its sustainable fuel made from carbon waste.

Nádia Skorupa Parachin came aboard as vice president of industrial biotechnology, and Phil Garcia was promoted to vice president of commercialization.

Parachin most recently oversaw several projects at Boston-based biotech company Ginkjo Bioworks. She previously co-founded Brazilian biotech startup Integra Bioprocessos.

Parachin will lead the Cemvita team that’s developing technology for production of bio-manufactured oil.

“It’s a fantastic moment, as we’re poised to take our prototyping to the next level, and all under the innovative direction of our co-founder Tara Karimi,” Parachin says in a news release. “We will be bringing something truly remarkable to market and ensuring it’s cost-effective.”

Moji Karimi, co-founder and CEO of Cemvita, says the hiring of Parachin represents “the natural next step” toward commercializing the startup’s carbon-to-oil process.

“Her background prepared her to bring the best out of the scientists at the inflection point of commercialization — really bringing things to life,” says Moji Karimi, Tara’s brother.

Parachin joins Garcia on Cemvita’s executive team.

Before being promoted to vice president of commercialization, Garcia was the startup’s commercial director and business development manager. He has a background in engineering and business development.

Founded in 2017, Cemvita recently announced a breakthrough that enables production of large quantities of oil derived from carbon waste.

In 2023, United Airlines agreed to buy up to one billion gallons of sustainable aviation fuel from Cemvita’s first full-scale plant over the course of 20 years.

Cemvita’s investors include the UAV Sustainable Flight Fund, an investment arm of Chicago-based United; Oxy Low Carbon Ventures, an investment arm of Houston-based energy company Occidental Petroleum; and Japanese equipment and machinery manufacturer Mitsubishi Heavy Industries.

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This article originally ran on EnergyCapital.

Moji Karimi joins the Houston Innovators Podcast to share how Cemvita has evolved with three distinct lines of energy transition businesses. Photo courtesy of Digital Wildcatters

Houston biotech company expands as a network of startups with energy transition solutions

HOUSTON INNOVATORS PODCAST EPISODE 217

A lot has changed since Moji Karimi co-founded his biotech company Cemvita with his sister Tara in 2017. In fact, a lot has changed just in 2023 — for Cemvita, for the energy transition, and for world as a whole.

In the past year, Cemvita has evolved its business to target three verticals, all within the company's mission of using synthetic biology to create solutions for the energy transition. Now, as Karimi explains on the Houston Innovators Podcast, Cemvita is a startup of startups.

Its eCO2 business line targets carbon dioxide utilization for feedstock, the technology's legacy application. But this year, Cemvita spun out its gold hydrogen arm into Gold H2, which has celebrated a successful pilot in the Permian Basin and raised early-stage funding. Cemvita has another vertical, a resource mining operation — under its Endolith spinoff — that operates out of a satellite office in Colorado.

While tackling the various verticals might seem ambitious, Karimi explains that they are all aligned with Cemvita's core mission and technology.

"If you think about it, everything we're doing has something to do with nature," he says on the show. "Environmental microbiology, biotech, and synthetic biology — it's now available, and we have the tools to do it. We want to be the company that goes and finds those applications and translates it from the idea and the science to the technology, and then scale it up into the engineer solution."



The way Cemvita is doing it is through partnerships. Karimi says he doesn't care about his logo being on the side of his plant, rather that a company can take the technology and apply it on a greater scale.

"The core of what we do is collaboration," he says. "What we care about is for the solutions to come to life."

Cemvita has a longstanding partnership with Oxy, first as an early investor in 2019, and later committing to establishing a plant around Cemvita's CO2-converting tech. Similarly, United Airlines invested in Cemvita before securing a massive offtake agreement with the airline for sustainable aviation fuel.

On the podcast, Karimi share some of his advice and observations on tackling startup-corporate relationships, as well as how these partnerships will continue in the new year. Karimi described 2023 as a year of resiliency, and he has big plans to deliver on for 2024.

"This next year is all about focused execution," he says, noting specifically a pre-commercial demo plant for CO2 utilization, a gold hydrogen field trial to prove out tech for Gold H2, and ongoing speed column tests for Endolith.

"We're graduating from the startup phase," Karimi says. "We need to make sure we don't lose the agility of being a startup."

United Airlines is interested in buying Cemvita's sustainable aviation fuel when it's produced. Photo courtesy of Cemvita

Houston startup with sustainable biotech solutions lands new customer in United Airlines

ready for takeoff

An innovative Houston company is celebrating a new deal with a global airline.

Cemvita Corp. announced a new offtake arrangement with United Airlines. Cemvita's first full-scale sustainable aviation fuel plant will provide up to 1 billion gallons of SAF to United Airlines. The 20-year contract specifies that Cemvita will supply up to 50 million gallons annually to United.

It's not the first collaboration Cemvita has had with the airline. Last year, United invested in the biotech company, which used the funding to open its Houston pilot plant.

“Since our initial investment last year, Cemvita has made outstanding progress, including opening their new pilot plant – an important step towards producing sustainable aviation fuel,” United Airlines Ventures President Michael Leskinen says in a news release. “United is the global aviation leader in SAF production investment, but we face a real shortage of available fuel and producers. Cemvita’s technology represents a path forward for a potentially significant supply of SAF and it’s our hope that this offtake agreement for up to one billion gallons is just the beginning of our collaboration.”

Founded in Houston in 2017 by brother-sister team Moji and Tara Karimi, Cemvita's biotechnology can mimic the photosynthesis process, turning carbon dioxide into feedstock. The company's SAF plan hopes to increase reliability of existing SAFs and lower impact of fuel creation.

“Biology is capable of truly amazing things,” Moji Karimi, CEO of Cemvita, says in the release. “Our team of passionate, pioneering, and persistent scientists and engineers are on a mission to create sustainable BioSolutions that redefine possibilities.”

“We are thrilled to partner with United Airlines in working towards transforming the aviation industry and accelerating the energy transition,” he continues. “This agreement featuring our unique SAF platform is a major milestone towards demonstrating our journey to full commercialization.”

Earlier this year, United, which was reportedly the first airline to announce its goal of net zero carbon emissions by 2050, launched its UAV Sustainable Flight FundSM. The fund, which named Cemvita to its inaugural group of portfolio companies, has raised over $200 million, as of this summer.

Moji and Tara Karimi co-founded Cemvita in 2017. Photo courtesy of Cemvita

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This article originally ran on EnergyCapital.

The opening of the pilot plant marks the debut of Cemvita’s eCO2 business as a wholly owned subsidiary. Photo courtesy of Cemvita

Fast-growing startup with carbon-free solution sets up pilot plant in Houston

big moves

Cleantech startup Cemvita has set up a pilot plant in its hometown of Houston to develop technology for converting carbon emissions as feedstock to make products like fertilizer, plastics, methane, and fuel.

The opening of the pilot plant marks the debut of Cemvita’s eCO2 business as a wholly owned subsidiary. The term eCO2 refers to equivalent carbon dioxide, or a way to measure a combination of greenhouse gases such as carbon dioxide and methane.

With a capacity of more than 14,000 gallons, the plant is producing eCO2 oil, an alternative to soybean oil. The company already is shipping samples of eCO2 products to customers, including renewable-fuel companies and plastics manufacturers.

Cemvita says the biofuel industry is facing feedstock shortages and price fluctuations. Biofuel feedstocks produce starches or sugars that can be converted to produce ethanol, while others produce oil that can be used in biodiesel production, according to the Sustainable Agriculture Research & Education (SARE) program.

“Traditional biofuels, including renewable diesel and sustainable aviation fuel, have relied on oils derived from crops, such as soybean and corn, as well as recycled vegetable oils,” Cemvita says. “As demand grows for petroleum-free alternatives, feedstock is in short supply and must compete with food markets. Crops of soybeans, sugar, and corn use huge swaths of land, and the raw materials require extensive refining — two factors that impede the processes from being sustainable.”

By contrast, eCO2 plants like Cemvita’s can supply feedstock production with minimal land and electricity requirements, and without relying on hydrogen or sunlight, the company says. Furthermore, the output of eCO2 plants is designed to carbon-negative, not just carbon-neutral.

Cemvita’s eCO2 biomanufacturing platform uses engineered microbes that absorb and convert carbon dioxide into feedstocks and finished products.

“The energy transition requires completely new, cost-effective approaches for heavy industry,” Charlie Nelson, chief operating officer of Cemvita, says in a news release. “We built this next-generation pilot plant in response to strong demand from … partners who are actively seeking sustainable solutions to the … feedstock shortage.”

Brother-and-sister team Moji and Tara Karimi founded Cemvita in 2017.

Investors in Cemvita include Oxy Low Carbon Ventures, an investment arm of Houston-based Occidental Petroleum, as well as BHP Group, Mitsubishi, and United Airlines Ventures.

Oxy Low Carbon Ventures and United Airlines Ventures are financing Cemvita’s work on sustainable jet fuel. United Airlines operates a hub at George Bush Intercontinental Airport Houston.

Cemvita has some news regarding its C-level execs. Photo courtesy of Cemvita

Houston biotech company expands leadership team

growing biz

An innovative Houston startup that's working with energy companies to decarbonize their operations has made changes to its C-suite.

Tara Karimi, who co-founded Cemvita with her brother Moji, has transition to the company's chief science officer. Liz Dennett has been hired to Karimi's previous role of CTO. The changes enable Karimi to focus on leading Cemvita's scientific research and development efforts as well as participating in driving innovation within the biotech industry as a whole, according to the company's press release.

"I'm excited to take on the role of chief science officer at Cemvita and what it represents for our company's growth," says Karimi in the release. "As chief science officer, I look forward to shaping policy and driving the conversation around the role of biotechnology in the energy transition."

As CTO, Dennett will lead the development of Cemvita's unique biotech products that tap into microbes to decarbonize operations on energy plants. Most recently, Dennett was vice president of data architecture and data engineering at Wood Mackenzie. She previously worked in tech and sustainability-focused roles at Hess Corp., Biota Technology, and Amazon Web Services.

“Working with biological systems presents a unique challenge but also a unique opportunity," says Dennett in the release. "It’s uniquely difficult to go from benchtop to in-situ reactors or oil wells with microbes and to achieve the kind of incredible results that we’re seeing in the lab. You need to build teams with deep specializations in chemistry, biology, energy systems, and geology.”

Dennett, who has her PhD and Master's from the University of Wisconsin-Madison and has served on Cemvita's advisory board for about a year, will report to CEO Moji Karimi directly.

“I know that Tara and Liz are going to make history at Cemvita,” says Moji Karimi in the release. “With 15 years of experience using data-driven approaches to solve pressing energy challenges, Liz brings to bear the kind of creativity and expertise that can quickly and meaningfully advance Cemvita’s impact on the Energy Transition.”

At a recent SXSW panel, four Houston energy experts discussed the importance of research, commercialization, and more in Houston to drive the energy transition. Photo via Getty Images

Experts address Houston's energy transition role — from research to commercialization

Houston @ SXSW

Every part of the energy industry is going to have a role in the energy transition — from the universities where the research and development is happening to the startups and the incumbent industry leaders, as a recent SXSW panel discussed.

“We are well known in Houston for being the energy capital of the world," Jane Stricker, executive director of the Houston Energy Transition Initiative, says as moderator of the panel. "The industry typically comes together with stakeholders to think about the solutions and how to solve this dual challenge of continuing to provide more energy to the world but doing it in a way that significantly reduces emissions at the same time.”

The panel, entitled "Ground Zero: Creating Pathways from Research to Scale Deployment," was put on by HETI, an organization under the Greater Houston Partnership, and took place Sunday, March 12, in Austin at SXSW.

“I often say that I believe Houston is ground zero for the transition because we have this unique combination of assets, infrastructure, innovation, research at universities, and a collective understanding of the importance of energy to people’s lives that allows us to tackle this problem in new ways," she continues.

Sticker was joined by Paul Cherukuri, vice president for innovation at Rice University; Juliana Garaizar, chief development and investment officer at Greentown Labs; and Tara Karimi, co-founder and CTO of Cemvita Factory. The panel highlighted the challenges facing Houston as it promises to lead the energy transition.

For Cherukuri, whose innovation-focused position was newly created when he was appointed to it last August, it's a pivotal moment for research institutions.

"It's really an exciting time in Houston because universities are changing," says Cherukuri. "Rice University itself is changing in dramatic ways, and it's a great opportunity to really plug into the energy transition inside of Houston."

The role he plays, as he explains, is to connect Rice innovators to the rest of the city and the world.

"We have to partner through the accelerators as well as with with companies who can catch what we've made and take it to scale," he continues. "That's uniquely something that we can do in Houston. It's not something that a lot of cities can do."

Representing the scaling efforts is Greentown Labs, and Garaizar explains how the Massachusetts-based organization, which has its second outpost in Houston, connects its member companies to corporate partners that can become funders, pilot partners, customers, and more. But scaling can only be accomplished with the right technologies and the proper funding behind them.

"Sixty percent of the technologies that are going to be used to decarbonize the world haven't yet been invented," she says on the panel. "So, there's a huge pull for technology right now. And we see people who are only on the private equity space now finally invested in a lot of earlier series like series A, but there's still some road to to be made there."

Houston-based Cemvita Factory is in the scale phase, and Karimi explains how she's actively working with companies to apply the company's unique biotechnology to convert CO2 to natural resources to accommodate each customer's needs. Cemvita is on the front lines of interacting with incumbent energy businesses that play a major role in the future of energy.

"The way we communicate with energy companies, we tell them that us to be the innovation arm for you and we work together," Karimi says. "I think it's everybody needs to understand it's a transition. There is no way to just change the way that chemicals are produced just immediately and replace it with something new. It's a transition that needs both aspects."

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New report shows surge in startup activity in Houston and across Texas

by the numbers

Houston and the rest of Texas are experiencing a boom in the creation of startups.

One barometer of growth in startup activity: The Houston metro area saw a 92 percent rise from 2024 to 2025 in the number of account applications submitted to Bluevine, a banking platform for small businesses.

New data from Bluevine also shows healthy year-over-year growth in account applications submitted by entrepreneurs in Texas’ three other major metros:

  • 242 percent growth in the San Antonio area
  • 153 percent growth in the Austin area
  • 28 percent growth in Dallas-Fort Worth

Further evidence of Texas’ uptick in business creation comes from a new state-by-state analysis of U.S. Census Bureau data by digital mailbox provider iPostal1.

From 2019 to 2024, the number of new business applications jumped 60 percent in Texas, according to the iPostal1 analysis. Wyoming tops the list, with a five-year growth rate of 216 percent.

“The U.S. has no shortage of ambition, but opportunity isn’t spread evenly,” says Jeff Milgram, founder and CEO of iPostal1. “In states like New York, Florida, and Texas, entrepreneurship is booming — people are starting businesses, taking risks, and finding opportunity.”

“Other states are still catching up,” Milgram adds. “Sometimes it’s access to funding, sometimes local policy, or just the confidence that new ventures will be supported.”

Women own many of the new businesses sprouting in Texas, according to a new analysis of 2024-25 data from the U.S. Small Business Administration. The analysis, done by SimpleTiger, a marketing agency for software-as-a-service (SaaS), shows Texas ranks eighth for the highest concentration of women entrepreneurs (109 per 1,000 female residents) among all states. That rate is three percent higher than the national average.

“Women entrepreneurs are no longer a side story in small business growth; they’re a leading indicator of where local economies are expanding next,” SimplyTiger says. “When women-owned business density is high, it usually signals stronger access to customers, networks, and startup pathways that make it easier to launch and keep going.”

In a December news release, Gov. Greg Abbott highlights Texas’ nation-leading job gains over the past 12 months, driven by employers small and large.

“From innovative startups to Fortune 500 corporations, job-creating businesses invest with confidence in Texas,” Abbott says. “With our strong and growing workforce, we will continue to expand career and technical training programs for better jobs and bigger paycheck opportunities for more Texans.”

Houston poised to add 30,900 new jobs in 2026, forecast says

jobs forecast

Buoyed by the growing health care sector, the Houston metro area will add 30,900 jobs in 2026, according to a new forecast from the Greater Houston Partnership.

The report predicts the Houston area’s health care sector will tack on 14,000 jobs next year, which would make it the No. 1 industry for local job growth. The 14,000 health care jobs would represent 45 percent of the projected 30,900 new jobs. In the job-creation column, the health care industry is followed by:

  • Construction: addition of 6,100 jobs in 2026
  • Public education: Addition of 5,800 jobs
  • Public administration: Addition of 5,000 jobs

At the opposite end of the regional workforce, the administrative support services sector is expected to lose 7,500 jobs in 2026, preceded by:

  • Manufacturing: Loss of 3,400 jobs
  • Oil-and-gas extraction: Loss of 3,200 jobs
  • Retail: Loss of 1,800 jobs

“While current employment growth has moderated, the outlook remains robust and Houston’s broader economic foundation remains strong,” GHP president and CEO Steve Kean said in the report.

“Global companies are choosing to invest in Houston — Eli Lilly, Foxconn, Inventec, and others — because they believe in our workforce and our long-term trajectory,” Kean added. “These commitments reinforce that Houston is a place where companies can scale and where our economy continues to demonstrate its resilience as a major engine for growth and opportunity. These commitments and current prospects we are working on give us confidence in the future growth of our economy.”

The Greater Houston Partnership says that while the 30,900-job forecast falls short of the region’s recent average of roughly 50,000 new jobs per year, it’s “broadly in line with the muted national outlook” for employment gains anticipated in 2026.

“Even so, Houston’s young, skilled workforce and strong pipeline of major new projects should help offset energy sector pressures and keep regional growth on pace with the nation,” the report adds.

The report says that even though the health care sector faces rising insurance costs, which might cause some people to delay or skip medical appointments, and federal changes in Medicare and Medicaid, strong demographic trends in the region will ensure health care remains “a key pillar of Houston’s economy.”

As for the local oil-and-gas extraction industry, the report says fluctuations and uncertainty in the global oil-and-gas market will weigh on the Houston sector in 2026. Furthermore, oil-and-gas layoffs partly “reflect a longer-term trend as companies in the sector move toward greater efficiency using fewer workers to produce similar volumes,” according to the report.

Construction underway on first-of-its-kind 3D-printed community in Houston

Building a Sustainable Future

Houston is putting itself front-and-center to help make sustainable, affordable housing a reality for 80 homeowners in an innovative scalable housing community. Developer Cole Klein Builders has partnered with HiveASMBLD to pioneer what’s touted as the world’s first large-scale, one-of-a-kind, affordable housing development using 3D printing technology — merging robotics, design, and sustainability.

Located across from Sterling Aviation High School, near Hobby Airport, Zuri Gardens will offer 80 two-bedroom, two-bathroom homes of approximately 1,360 square feet, situated in a park-like setting that includes walking trails and a community green space.

Homes in Zuri Gardens will hit the market in early summer of 2026. Final pricing has yet to be determined, but Cole Klein Builders expects it to be in the mid-to-high 200s.

Interestingly, none of the homes will offer garages or driveways, which the developer says will provide a cost savings of $25,000-$40,000 per home. Instead of parking for individual units, 140 parking spaces will be provided.

Each two-story home is comprised of a ground floor printed by HiveASMBLD, using a proprietary low-carbon cement alternative by Eco Material Technologies that promises to enhance strength and reduce CO2 emissions. The hybrid homes will have a second floor built using engineered wood building products by LP Building Solutions. Overall, the homes are designed to be flood, fire, and possibly even tornado-proof.

The "Zuri" in Zuri Gardens is the Swahili word for “beautiful,” a choice that is fitting considering that the parks department will be introducing a five acre park to the project — with 3D-printed pavilions and benches — plus, a three-acre farm is located right across the street. The Garver Heights area is classified as a food desert, which means that access to fresh food is limited. Residents will have access to the farm’s fresh produce, plus opportunities to participate in gardening and nutrition workshops.

zuri gardens 3d-printed housing community First large-scale affordable housing project of 3D-printed homes rises in Houston Zuri Gardens is getting closer to completion. Courtesy rendering

Cole Klein Builders created Zuri Gardens in partnership with the Houston Housing Community Development Department, who provided infrastructure reimbursements for the roads, sewer lines, and water lines. In return, CKB agreed to push the purchase prices for the homes as low as possible.

Zuri Gardens also received $1.8 million dollars from the Uptown Tourism Bond, 34 percent of which must be used with minority-owned small businesses. Qualified buyers must fit a certain area of median income according to HUD guidelines, and homes must be owner-occupied at all times. Zuri Gardens already has an 800-person waitlist.

“They’re trying to bridge that gap to make sure there is a community for the homebuyers who need it — educators, law enforcement, civil workers, etc.,” Cole Klein Builders’ co-principal Vanessa Cole says. “You have to go through a certification process with the housing department to make sure that your income is in alignment for this community. It has been great, and everyone has been really receptive.”

Cole has also brought insurance underwriters to visit the site and to help drive premiums below regular rates for Houston homeowners, as claim risks for one of the 3D homes are extremely low.

Tim Lankau, principal at HiveASMBLD, notes that the 3D hybrid design allows for a more traditional appearance, while having the benefits of a concrete structure: “That’s where the floodwaters would go, that’s where you can hide when there’s a tornado, and that’s where termites would eat. So you get the advantages of it while having a traditionally-framed second floor.”

It’s important to note that Zuri Gardens is not located in a flood prone area, nor did it flood during Hurricane Harvey — being flood-proof is merely a perk of a cement house. The concrete that Eco Material Technologies developed is impervious. The walls are printed into hollow forms, which house rebar, plumbing, and accessible conduits for things like electrical lines and smart house features. Those walls are then filled with a foamcrete product that expands to form a “monolithic concrete wall.”

David McNitt, of Eco Material Technologies, explains that his proprietary concrete is made of PCV, and contains zero Portland cement. Instead, McNitt’s cement is made from coal ash and is 99 percent green (there are a few chemicals added to the ash). Regardless, it’s made from 100 percent waste products.

“This is a product that has really been landfilled before,” says McNitt. “It’s coal ash, and it’ll set within 8-10 minutes. It’s all monolithic, and one continuous pour — it’s literally all one piece.”

Eco Material Technologies’ concrete product is impressively durable. A traditional cinderblock wall will crush at around 800 psi, while this material crushes at about 8,000 psi.

“It’s ten times stronger than a cinderblock wall that can withstand hurricanes,” claims McNitt. “I don’t think you’d even notice a hurricane. It’ll be really quiet inside, too — so you won’t get interrupted during your hurricane party. It’s way over-engineered, it really is.”

The second story is built using weatherproof and eco-friendly products by LP Building Solutions. Their treated, engineered wood products come with a 50 year warranty, and their radiant barrier roof decking product blocks 97% of UV rays, and keeps attic temperatures 30° cooler than traditional building materials. These materials, combined with the concrete first floor, will keep heating and cooling costs low — something the folks at HiveASMBLD refer to as “thermal mass performance.”

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This article originally appeared on CultureMap.com.

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