Search

Lactononadecapeptide (LNDP; NIPPLTQTPVVVPPFLQPE) is a memory-improving peptide. The current study aimed to determine the effects of a single dose of tablets containing LNDP on cognitive function in healthy Japanese men aged 30-59 years. A randomized, double-blind, cross-over, placebo-controlled trial was conducted in participants randomly assigned to receive LNDP or placebo tablets. The Uchida–Kraepelin test was used to induce cognitive load in participants as a model of work load. Cognitive function was evaluated using the Japanese version of the CNS Vital Signs. Composite memory and verbal memory were significantly higher following consumption of LNDP than placebo tablets. Carryover effects were observed in attention and concentration domains so that period 1 data was analyzed. LNDP consumption led to higher processing speed, executive function, and cognitive flexibility than placebo. Thus, supplementation with a single dose of LNDP tablets may improve cognitive functions including memory, attention, concentration, and information processing in daily life. [ABSTRACT FROM AUTHOR]

Yeast mannan is a part of yeast cell wall and can potentially affect gut microflora as a soluble dietary fiber. We demonstrated that yeast mannan suppressed putrefactive production and increased the relative abundance of Bacteroides thetaiotaomicron in in vitro fecal fermentation. These results suggest that yeast mannan can be used as a novel prebiotic food ingredient. [ABSTRACT FROM AUTHOR]

The article offers information on a study which aims to efficiently produce Coenzyme Q10 in rice by introducing the gene for decaprenyl diphosphate synthase (DdsA) into rice sugary and shrunken mutants. It says that the study utilized the rice cultivar Nipponbare and the DdsA gene was isolated from Gluconobacter suboxydans. The result is a genetically modified rice cultivar that produces 1.3 to 1.6 times coenzyme Q10 as earlier enriched rice did.