Bacteria TRIZ Cases

Eliminating glucose from the fermentation medium prevents metabolic overflow, resolving the contradiction between cell mass and optical density yield.

Deleting polB, dinB, and umuDC genes reduces mutation rates to enable stable cloning of difficult genes.

Substituting histidine at position 636 boosts CO tolerance, enabling high productivity of 4-carbon organic substances.

Geobacillus midousuji degrades recalcitrant pollutants across varying oxygen levels, expanding treatable ranges without strict aerobic control.

Rossellomorea oryzaecorticis ZC255 resolves scarce germ plasm resources by combining mercury, cadmium, and tetracycline resistance genes into a single strain.

DNA molecular markers and specific primers enable rapid identification of Lactobacillus paracasei subsp. paracasei NTU 101 without culturing live bacteria.

Engineered microbial cells degrade oxalate through catabolic enzymes, reducing hyperoxaluria severity without invasive treatments.

Lactobacillus mali APS1 probiotic modulates intestinal microbiota to resolve metabolic syndrome by improving glucose tolerance and reducing body weight.

Vacuum infusion of polyphenols into live probiotic cells enhances survivability in harsh gastrointestinal conditions without thermal processing.

A Bacillus subtilis mutant strain produces vitamin K2 through optimized fermentation.

A chemical treatment composition containing formaldehyde, surfactant, and organic acids enhances ethanol yield during carbohydrate fermentation.

Overexpressing adhE2 in engineered Clostridium tyrobutyricum converts butyryl-CoA to butanol, achieving 10.0 g/L titers and resolving toxicity bottlenecks.

Replacing tyrosine with aspartic acid at position 553 reduces feedback inhibition, increasing ketoisocaproate yields by up to 122 percent.

Bacterial lysate TLR agonists modulate redox status to reduce oxidative stress and tissue damage.

Disarmed Agrobacterium strains eliminate hairy root phenotypes while maintaining high transformation efficiency in recalcitrant species like soybeans.

Reversed variable domain orientation in bispecific antibodies improves tumor cell penetration while reducing toxicity to healthy tissue.

Cyclic thermal stress strengthens cell walls in dried microbes, maintaining high viability during long-term storage without drying damage.

Coexpressing GroES and GroEL chaperonins with isoeugenol monooxygenases in E. coli improves vanillin production yield from renewable substrates.

A controlled fermentation method using specific bacterial strains to produce safe fruit and vegetable broth.

Genetically modified microorganisms produce higher protein concentrations for animal feed applications.

Engineered microbial hosts overproduce fatty acids using thioesterase and acetyl-CoA carboxylase to reduce glycerin side products.

Immobilizing starvation-phase bacteria on porous substrates resolves the contradiction between preservation reliability and treatment speed.

Heterotrophic fermentation converts cellulose into polyunsaturated biological oils using Stramenopile microorganisms.

Anhydrous probiotic suspension uses vegetable fat and emulsifiers to maintain stable dispersion against sedimentation.

Additives for hay and silage inoculants inhibit methanogenesis and denitrification to minimize non-CO2 greenhouse gas emissions during conservation.

Biomineralized manganese carbonate particles adsorb heavy metals from water, resolving the trade-off between removal efficiency and environmental friendliness.

Solid phase fermentation simplifies seed incubation complexity while maintaining high productivity for industrial coenzyme Q10 production.

Engineered host organisms express heterologous P450 enzymes to catalyze specific hydroxylation and oxidation reactions on 13R-manoyl oxide.

Switching from solid blood agar to liquid insect cell culture medium reduces incubation time and contamination risks while enabling reliable cultivation.

A halophilic Bacillus polyfermenticus KMU01 strain produces salt-tolerant gamma-glutamyl transpeptidase for high-salt food fermentation.

Cultivating Cupriavidus necator bacteria under controlled autotrophic conditions to produce polyhydroxyalkanoate polymers with reduced crystallinity.

Aldolase gene promoter drives high-level target protein expression in recombinant Lactobacillus casei.

An enzyme-substrate system depletes dissolved oxygen in liquid culture media to support anaerobic microorganism growth.

Selective enrichment media incorporating efflux pump inhibitors suppress background flora to enable rapid detection of Salmonella and Shiga toxin-producing E. coli.

Enzymatic degradation of alginic acid overcomes assimilation challenges in sustainable fermentation.

Targeted primer pools reduce codon frequency bias and screening time during gene site saturation mutagenesis, improving variant generation efficiency.

Engineering methanogens with isoprene synthase converts inhibitory CO2 into isoprene, resolving productivity trade-offs in wastewater treatment.

A polypeptide variant with cysteine substituted by serine at position 33 boosts L-lysine production capacity in modified Corynebacterium glutamicum strains.

Engineering recombinant cells to produce para-nitro-L-phenylalanine from native metabolites using heterologous enzymes.

Thermodynamic control of reactant concentrations shifts fermentation equilibrium to produce specific hydrocarbons from synthesis gases.

A two-phase fermentation method boosts nitrate reductase activity in Staphylococcus strains.

A portable differential mobility spectrometer detects volatile organic compounds emitted by bacteria.

Lactobacillus reuteri strain ATCC PTA-6127 stimulates lysine uptake in pet animals to enhance amino acid absorption.

Strengthening the triacylglycerol decomposition pathway redirects metabolic flux to resolve stationary phase carbon limitations.

A mutant microorganism encodes valine decarboxylase to convert amino acids into primary amines.

Replacing S. roseosporus with pigment-free Streptomyces griseus L340 eliminates secondary metabolite interference, simplifying downstream purification.

Evolutionary adaptation of microbial host cells converts terpene toxicity into a beneficial trait, enabling higher production titers without growth arrest.