The Relationship between Microbial Communities in Coffee Fermentation and Aroma with Metabolite Attributes of Finished Products.

Coffee is a critical agricultural commodity and is used to produce premium beverages enjoyed by people worldwide. The microbiome of coffee beans has proven to be an essential tool that improves the flavor profile of coffee by creating aromatic flavor compounds through natural fermentation. This study investigated the natural microbial consortium during the wet process fermentation of coffee onsite in Thailand in order to identify the correlation between microbial diversity and biochemical characteristics including flavor, aroma, and metabolic attributes.

Expanding the horizons of levan: from microbial biosynthesis to applications and advanced detection methods.

Levan, a β-(2,6)-linked fructose polymer, exhibits diverse properties that impart versatility, rendering it a highly sought-after biopolymer with various industrial applications. Levan can be produced by various microorganisms using sucrose, food industry byproducts and agricultural wastes. Microbial levan represents the most potent cost-effective process for commercial-scale levan production.

Economic co-production of cellulosic ethanol and microalgal biomass through efficient fixation of fermentation carbon dioxide.

An integrated process for the co-production of cellulosic ethanol and microalgal biomass by fixing CO generated from bioethanol fermentation is proposed. Specifically, over one-fifth of the fermentative carbon was converted into high-purity CO during ethanol production. The optimal concentration of 4 % CO was identified for the growth and metabolism of Chlorella sp.

Development of Bioactive Edible Films Containing Probiotics as a Coating for Fresh-Cut Fruit.

Bioactive edible films have received more attention in recent years as a method for food preservation with value-added functions. The aim of this study was to develop a bioactive edible film containing mucilage of cactus () and incorporating the probiotic strain FM11-2 as an active component to promote consumer health benefits. is rich in nutritional and bioactive compounds and the abundance of this cactus makes it attractive for food applications.

Active Thermoplastic Starch Film with Watermelon Rind Extract for Future Biodegradable Food Packaging.

Petrochemical plastic wastes generate serious environmental problems because they are resistant to natural decomposition. The aim of this study was to develop a biodegradable active thermoplastic film composed of polyvinyl alcohol (PVA), corn starch (ST), glycerol, and the active compounds from watermelon rind extract (WMRE), or PVA/ST/WMRE, using the casting technique. The film was examined for its mechanical, antioxidant, and functional properties against selected foodborne pathogens.

Perspectives and new directions for bioprocess optimization using Zymomonas mobilis in the ethanol production.

Zymomonas mobilis is an ethanologenic microbe that has a demonstrated potential for use in lignocellulosic biorefineries for bioethanol production. Z. mobilis exhibits a number of desirable characteristics for use as an ethanologenic microbe, with capabilities for metabolic engineering and bioprocess modification.

Using Potential Lactic Acid Bacteria Biofilms and their Compounds to Control Biofilms of Foodborne Pathogens.

and isolated from fermented fish and chicken represented the potential probiotic properties against ATCC 11778, ATCC 8739, and subsp. serovar Typhimurium ATCC 13311. Isolated Lactic Acid Bacteria were tested for physiological characteristics, antimicrobial activity of crude supernatant containing 0.

Biofilm Reactor for Ethanol Production Using Rice Straw Hydrolysate Under Continuous and Repeated Batch Processes.

Plastic composited corn silk was developed as a biotic/abiotic carrier for biofilm formation for the purpose of ethanol production. Furthermore, we explored the use of rice straw hydrolysate as substrate in both multistage continuous culture and repeated batch processes and compared the ethanol production efficiency by two strains of . Biofilm formed by bacterial strains ZM4 and TISTR551 were detected, and its proficiencies were compared under various conditions by scanning electron microscopy (SEM) and crystal violet assays.

Expression and Extracellular Secretion of Endo-glucanase and Xylanase by Zymomonas mobilis.

Recombinant Zymomonas mobilis (pGEX-4T-3 BI 120-2) was constructed to encode endo-glucanase (CelA) and endo-xylanase (Xyn11) from Z. mobilis ZM4 (ATCC 31821) and an uncultured bacterium. The recombinant was genetically engineered with the N-terminus of a predicted SecB-dependent (type II) secretion signal from phoC of Z.

Inhibition analysis of inhibitors derived from lignocellulose pretreatment on the metabolic activity of Zymomonas mobilis biofilm and planktonic cells and the proteomic responses.

Lignocellulose pretreatment produces various toxic inhibitors that affect microbial growth, metabolism, and fermentation. Zymomonas mobilis is an ethanologenic microbe that has been demonstrated to have potential to be used in lignocellulose biorefineries for bioethanol production. Z.

Development of corn silk as a biocarrier for Zymomonas mobilis biofilms in ethanol production from rice straw.

Z. mobilis cell immobilization has been proposed as an effective means of improving ethanol production. In this work, polystyrene and corn silk were used as biofilm developmental matrices for Z.

Biofilm production by Zymomonas mobilis enhances ethanol production and tolerance to toxic inhibitors from rice bran hydrolysate.

Microorganisms play a significant role in bioethanol production from lignocellulosic material. A challenging problem in bioconversion of rice bran is the presence of toxic inhibitors in lignocellulosic acid hydrolysate. Various strains of Zymomonas mobilis (ZM4, TISTR 405, 548, 550 and 551) grown under biofilm or planktonic modes were used in this study to examine their potential for bioconversion of rice bran hydrolysate and ethanol production efficiencies.

Loss of flagellum-based motility by Listeria monocytogenes results in formation of hyperbiofilms.

Biofilm formation by the gram-positive, motile, food-borne pathogen Listeria monocytogenes was demonstrated to occur by an ordered series of stages. Biofilm development involves flagellum-based motility, which when blocked decreases initial bacterial surface attachment but subsequently leads to the formation of hyperbiofilms, surface-attached communities reaching high density.