Phosphatidyl inositol and a cardiolipin-like phospholipid survive the autolysis which is induced in yeast by treating it with toluene, whereas other phospholipids are extensively degraded. Lipid from autolyzed yeast was suspended in isopropanol to extract lecithin and neutral lipid. The insoluble phosphatidyl inositol and cardiolipin were then separated by chromatography on silicic acid.

The present study deals with the production of L Brevibacterium spp. The permeability of cells decide the extent of excretion of L which was modified using yeast extract, limitation of biotin and electropration. The amino acid concentration produced by fermentation was found to be 162mg /100 ml detected b spot in TLC. At 8 % culture density the yield was higher.(27.3mg/10 ml), 35 optimum for ma...

The effect of yeast strain and aging time on the chemical composition, analytical, and sensory foam properties of sparkling ciders has been studied. The analytical foam parameters (foamability, HM; Bikerman coefficient, sigma; and foam stability time, T(s)) were significantly influenced by aging and yeast strain. The sensory attributes (initial foam, foam area persistence, bubble size, foam col...

Barker's study on the nutritive requirements of Prototheca zopfii indicated that this colorless alga fails to grow in the absence of small amounts of yeast extract. A study of the growth factor requirements of Prototheca has shown that the active constituent of yeast extract necessary for the growth of this organism is thiamin (vitamin B(1)). Thiamin can fully replace the complex yeast material...

The antidiabetic and antioxidant potential of ethanolic extract of Cassia nemophila pod (EECNP) was evaluated by three in vitro assays, including yeast glucose uptake assay, glucose adsorption assay, and DPPH radical scavenging activity. The result revealed that the extracts have enhanced the uptake of glucose through the plasma membrane of yeast cells. A linear increase in glucose uptake by ye...

the virulence of four iranian isolates and one exotic isolate of beauveria bassiana on the fifth instar nymphs and also five iranian isolates and one exotic isolate of it on the adults of eurygaster integriceps puton was studied using dipping and topical micro-application techniques, respectively. nymphs were highly susceptible to the isolates. comparison of lc50 values showed no significant di...

background: applications of natural ingredients not only increase the shelf life of food but also omit the problems of synthetic preservatives compounds. objective: cinnamon verum essential oil (cveo 0.05, 0.1, 0.15%) and echinacea purpurea extract (epe 0.25, 0.5, 0.75%) were added to kolompe (a traditional cookie in kerman-iran) and their antioxidant and antimicrobial effects were compared wit...

Eduard Buchner’s discovery of cell-free metabolism 100 years ago was a landmark in biochemistry; it can be said to be the start of detailed metabolic studies. The fact that a soluble fraction of yeast, which he called “zymase”, was able to produce ethanol from glucose was revolutionary, and finally put paid to the idea that living cells were essential for fermentation (Buchner, 1897). Later, th...

The present work consists of producing bioethanol from potato (Solanum tuberosum L.) peels using Saccharomyces cerevisiae. different physicochemical and biochemical analyses showed that are rich in nutritional elements make them favorable to alcohol fermentation. total soluble sugars content, the pH value ethanol content were evaluated. results indicated limited production. addition yeast extra...

1. beta-Ionone vapour has been shown to cause an increase in the more saturated carotenes and a decrease in the less saturated carotenes of Rhodotorula glutinis. Lycopersene (dihydrophytoene) has been proposed as a precursor to phytoene. Attempts were made to isolate lycopersene from beta-ionone-treated cultures of R. glutinis. 2. Large samples of beta-ionone-treated cultures were examined for ...