Bacteria TRIZ Cases

Elevating pH to 9.0 prevents amino acid decomposition during pressurized heat treatment, reducing sulfate ion usage.

Engineered microbial organisms convert sugar feedstocks directly into valuable aromatic compounds through specific enzymatic pathways.

Adjusting the H2:CO molar ratio via hydrogen removal prevents suboptimal ratios from degrading cell growth and product selectivity.

Microbial hemoprotein extract mediates oxygen tension to protect lactic acid bacteria, addressing weight management challenges.

Specific bacteria degrade excess sludge volume without generating greenhouse gas emissions from incineration.

Deleting citrate synthase and oxaloacetate decarboxylase genes reduces by-product formation while increasing aspartic acid yield.

Attenuating the proP gene overcomes metabolic control limits to boost L-methionine production yields in fermentation processes.

Recombinant carboxypeptidase B overcomes protease contamination from natural sources by using trypsin cleavage to yield 99.1% pure enzyme.

Specific amino acid substitutions in lipocalin 2 muteins resolve the lack of effective Glypican-3-binding proteins for cancer diagnostics.

Removing the alpha-1 helix allows modified Cry toxins to bypass cadherin mutations, maintaining toxicity against insect strains resistant to wild-type toxins.

Overexpressing FtsH protease strengthens biofilm formation, increasing lysine yield by 38.2% and shortening the fermentation cycle by 26.4%.

Sequenced Lactococcus lactis strains IBB109 and IBB417 selectively destroy cancer cells via microRNA modulation, avoiding opportunistic colonization risks.

Acidic heat treatment reduces color and viscosity in fermentation media, improving oxygen saturation.

A recombinant 9-lipoxygenase enzyme increases delta-valerolactone and delta-decalactone production in mango fruit tissues.

Native Pseudomonas, Alcanivorax, and Thalassospira strains degrade diesel and crude oil without disrupting local ecosystems.

Chromosomal toxin and plasmid antitoxin genes replace antibiotic selection markers, resolving environmental health risks while maintaining plasmid stability.

Gluconacetobacter oboediens MTCC 5610 converts organic substrates into microbial cellulose mats under static culture conditions.

Fred transporter protein facilitates human milk oligosaccharide efflux, reducing metabolic burden and by-product formation in fermentation.

Engineered Megasphaera elsdenii produces butanol using bifunctional aldehyde/alcohol dehydrogenase.

Protective agents cushion cells against mechanical stress during freeze-drying, maintaining 81.5%-92% survival rates for rapid meat fermentation.

Reducing glucose dehydrogenase activity via gcd modification redirects metabolic flux, increasing L-amino acid yield without disrupting bacterial viability.

Modified Type 3 Secretion Systems enable engineered microbes to deliver therapeutics to extracellular targets, resolving intracellular delivery limitations.

A dihydrolipoamide acetyltransferase variant with a Gly77Asp substitution enhances L-valine biosynthesis in Corynebacterium glutamicum.

Replacing petroleum feedstocks with engineered microbial fermentation reduces environmental impact while maintaining production efficiency.

A defined microbial composition modulates the rumen microbiome to enhance milk fat content and overall production in lactating cows.

Segmented E. coli culture with pH-stat fed-batch feeding resolves the growth-expression trade-off, increasing cell mass by 1.5-fold.

Modifying bacterial uptake carriers dctA, dcuA, and dcuB to increase substrate absorption for L-glutamic acid synthesis.

Replacing native glutamate dehydrogenase with Peptostreptococcus asaccharolyticus GdhA resolves the cost-productivity trade-off in Bacillus fermentation.

Removing native feedback inhibition and balancing NADH/NADPH levels boosts threonine yield in recombinant yeast fermentation.

A bioreactor with membrane filters regulates lactic acid bacteria sizes through shear force and physical filtration.

Introducing a specific isoprene synthase gene into halophilic methanotrophs overcomes low yield bottlenecks to enable high-yield production from methane.

Truncated capsule polymerase produces uniform capsular polysaccharides, eliminating costly fermentation and biohazard risks.

A recombinant Corynebacterium glutamicum converts fermentable carbon substrates into o-aminobenzoate via metabolic engineering.

Clostridium bacteria ferment industrial waste gases into high-value aromatic compounds, bypassing agricultural land use constraints.

Modifying lipase enzyme sequences reduces short-chain fatty acid production, eliminating residual odors without adding fragrances.

Culturing C1-assimilating bacteria with methanol produces ergothioneine, avoiding organic solvents and reducing synthesis costs.

Sludge substrate fermentation replaces expensive media to lower production costs while polar repulsion precipitation removes inorganic salt impurities.

Engineered Clostridium strains boost alcohol acyltransferase and lipase activity, increasing ester production by 1-3 orders of magnitude.

Co-expressing OmpF with target proteins directs secretion into culture broth, preventing intracellular contamination during high-density fermentation.

Phage-encoded nickase cuts single-stranded DNA, eliminating modified substrates and reducing experimental complexity.

Concurrent metabolism by substrate-selective cells overcomes sequential sugar consumption bottlenecks, enhancing biochemical yield.

Elevated salt concentrations and reduced nutrients preserve bacterial density, preventing mortality in aquaculture applications.

Mutant acetolactate synthase III overcomes feedback inhibition to allow efficient valine production using carbon dioxide as sole carbon source.

Faropenem and cloxacillin in the culture medium inhibit non-target strains to resolve low sensitivity in detecting NDM-1 resistant bacteria.

A minimal microbial consortium of specific Clostridium species restores gut balance and modulates immune responses to prevent food allergies.

Analyzing intestinal microbiome levels to predict patient response to CAR T cell therapy.

Palaeococcus ferrophilus DNA polymerase removes intein elements to resolve the contradiction between high fidelity and extension rate, achieving 8kb per minute.

Specific protease selection and parameter optimization resolve low peptide ratios in yeast extracts, enhancing lactic acid bacteria promotion.