Biotechnology Terms Starting With B

Biofuel biofuel is a fuel derived from biological materials, primarily plant biomass, algae, or microbial fermentation products, as a renewable alternative to fossil fuels.

First-generation biofuels such as ethanol from corn or sugarcane and biodiesel from vegetable oils are commercially established but compete with food production for arable land and water. Second-generation biofuels use lignocellulosic biomass such as agricultural residues and dedicated energy grasses, avoiding direct food competition. Third-generation biofuels from algae offer yields per acre that can exceed those of terrestrial crops by tenfold or more, and algae can be cultivated on non-arable land using brackish or wastewater, though commercial-scale production remains economically challenging.

Bioinformatics is the application of computational tools and statistical methods to collect, store, analyze, and interpret large-scale biological data, particularly genomic and proteomic datasets.

The field emerged from the need to manage and analyze the massive data outputs of DNA sequencing, protein structure determination, and high-throughput experiments. Core tasks include sequence alignment, genome assembly, gene prediction, phylogenetic analysis, and protein structure prediction. Modern bioinformatics increasingly incorporates machine learning, exemplified by DeepMind’s AlphaFold2 program, which in 2021 predicted the three-dimensional structures of more than 200 million proteins with accuracy rivaling experimental methods.

Those predictions are freely available in the AlphaFold Protein Structure Database and have accelerated drug discovery research worldwide.

Biolistics is a physical method of introducing DNA into cells by coating tungsten or gold microparticles with nucleic acid and firing them into tissue at high velocity using a gene gun.

Developed by John Sanford and colleagues at Cornell University in the 1980s, biolistics bypasses the host-range limitations of biological transformation vectors and can deliver DNA into chloroplasts and mitochondria as well as nuclear genomes. The method is particularly important for transforming monocot crops such as maize and wheat that are recalcitrant to Agrobacterium-mediated transformation. Gold particles used in biolistics typically range from 0.6 to 1.6 micrometers in diameter, small enough to penetrate cell walls without causing lethal damage to most target cells.

Biopharmaceutical biopharmaceutical is a therapeutic product derived from biological sources, including recombinant proteins, monoclonal antibodies, vaccines, and cell therapies, as opposed to chemically synthesized small-molecule drugs.

Biopharmaceuticals are produced using living cells engineered to express a therapeutic protein, then purified through multiple chromatographic steps before formulation. They include recombinant insulin, erythropoietin, monoclonal antibodies, and blood clotting factors that have transformed the treatment of diabetes, anemia, cancer, and hemophilia. Because biopharmaceuticals are large molecules that digestive enzymes would degrade, most are administered by injection or infusion rather than taken orally.

The global biopharmaceutical market exceeded 400 billion dollars in annual sales by the early 2020s, reflecting how central these products have become to modern medicine.

Bioprocessing is the set of procedures used to convert raw biological materials into valuable products, encompassing cell culture, fermentation, extraction, and purification steps.

Upstream bioprocessing involves growing cells or microorganisms in bioreactors under optimized conditions of temperature, pH, dissolved oxygen, and nutrient supply to maximize production of the desired biomolecule. Downstream bioprocessing includes cell harvesting, lysis where needed, centrifugation, chromatographic purification, and formulation to yield a pure, stable, and safe final product. For biopharmaceuticals, downstream processing can account for 50 to 80 percent of total manufacturing costs, driving substantial innovation in membrane filtration and continuous chromatography.

A single 20,000-liter bioreactor run producing a monoclonal antibody may require weeks of downstream processing before the product meets regulatory purity standards.

Bioreactor bioreactor is a vessel designed to maintain controlled biological and chemical conditions, including temperature, pH, oxygen, and nutrient supply, to support the growth of microorganisms or cells for industrial production.

Stirred-tank bioreactors are the most common design for microbial fermentation, while wave bioreactors and hollow-fiber systems are preferred for sensitive mammalian cell cultures that cannot tolerate the shear forces of mechanical stirring. Process parameters are monitored and controlled in real time using sensors and automated feedback loops to maximize yield and product quality. Industrial bioreactors span an enormous range of scales, from bench-top vessels holding a few hundred milliliters to production tanks exceeding 20,000 liters used to manufacture monoclonal antibodies.

At the largest scales, maintaining uniform oxygen distribution and temperature throughout the culture volume requires sophisticated impeller designs and sparging systems.

Biosensor biosensor is an analytical device that combines a biological recognition element, such as an enzyme, antibody, or nucleic acid, with a physicochemical transducer to detect and quantify a specific analyte.

The first biosensor, developed by Leland Clark in 1962, coupled the enzyme glucose oxidase to an electrochemical oxygen electrode to measure blood glucose concentration. Modern biosensors are used in clinical diagnostics, food safety testing, environmental monitoring, and point-of-care devices that return results in minutes without laboratory infrastructure. Emerging biosensors exploit aptamers, CRISPR-Cas proteins, and synthetic receptors to detect targets ranging from single viral particles to parts-per-trillion concentrations of environmental toxins.

The SHERLOCK platform, based on the CRISPR-Cas13 enzyme, can identify specific RNA sequences from pathogens such as Zika virus in a patient sample within an hour.