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Brewers yeast

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https://www.readbyqxmd.com/read/28801642/extreme-anoxia-tolerance-in-crucian-carp-and-goldfish-through-neofunctionalization-of-duplicated-genes-creating-a-new-ethanol-producing-pyruvate-decarboxylase-pathway
#1
Cathrine E Fagernes, Kåre-Olav Stensløkken, Åsmund K Røhr, Michael Berenbrink, Stian Ellefsen, Göran E Nilsson
Without oxygen, most vertebrates die within minutes as they cannot meet cellular energy demands with anaerobic metabolism. However, fish of the genus Carassius (crucian carp and goldfish) have evolved a specialized metabolic system that allows them to survive prolonged periods without oxygen by producing ethanol as their metabolic end-product. Here we show that this has been made possible by the evolution of a pyruvate decarboxylase, analogous to that in brewer's yeast and the first described in vertebrates, in addition to a specialized alcohol dehydrogenase...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28763969/identification-and-determination-of-selenohomolanthionine-the-major-selenium-compound-in-torula-yeast
#2
Katarzyna Bierła, Noriyuki Suzuki, Yasumitsu Ogra, Joanna Szpunar, Ryszard Łobiński
Torula yeast (Candida utilis) was found to metabolize selenium in a totally different way to Brewer's yeast (S. cerevisiae) leading to the biosynthesis of selenohomolanthionine (SeHLan), a major selenium compound accounting for 60-80% of the total selenium. The identity of SeHLan was confirmed by retention time matching in hydrophilic ion interaction chromatography (HILIC) with inductively coupled plasma mass spectrometric detection (ICP MS) using a custom synthesized standard molecule and by HILIC - Orbitrap MS and MS-MS fragmentation...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28725447/anti-saccharomyces-cerevisiae-antibodies-asca-are-associated-with-body-fat-mass-and-systemic-inflammation-but-not-with-dietary-yeast-consumption-a-cross-sectional-study
#3
Anne Stine Kvehaugen, Martin Aasbrenn, Per G Farup
BACKGROUND: Baker's/brewer's yeast, Saccharomyces cerevisiae, has been used as an alternative to antibiotic growth promoters to improve growth performance in animals. In humans, Saccharomyces cerevisiae is among the most commonly detected fungi in fecal samples and likely originates from food. Recently, an association between anti-Saccharomyces cerevisiae antibodies (ASCA) and obesity in humans was suggested, but the cause of the elevated ASCA levels is not clear. Our aim was to study ASCA in morbidly obese subjects and explore potential associations with anthropometrics, diet, co-morbidities and biomarkers of inflammation and gut permeability...
2017: BMC Obesity
https://www.readbyqxmd.com/read/28646828/spent-yeast-as-natural-source-of-functional-food-additives
#4
Rita Rakowska, Anna Sadowska, Ewa Dybkowska, Franciszek Świderski
Spent yeasts are by-products arising from beer and wine production which over many years have been chiefly used as feed additives for livestock. They contain many valuable and bioactive substances which has thereby generated much interest in their exploitation. Up till now, the main products obtained from beer-brewing yeasts are β-glucans and yeast extracts. Other like foodstuffs include dried brewer’s yeast, where this is dried and the bitterness removed to be fit for human consumption as well as mannan-oligosaccharides hitherto used in the feed industry...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28643623/the-genomic-basis-of-lactobacilli-as-health-promoting-organisms
#5
Elisa Salvetti, Paul W O'Toole
Lactobacilli occupy a unique position in human culture and scientific history. Like brewer's and baker's yeast, lactobacilli have been associated with food production and preservation for thousands of years. Lactobacillus species are used in mixed microbial cultures, such as the classical Lactobacillus bulgaricus/Streptococcus thermophilus inoculum for yogurt fermentation, or combinations of diverse lactobacilli/yeasts in kefir grains. The association of lactobacilli consumption with greater longevity and improved health formed the basis for developing lactobacilli as probiotics, whose market has exploded worldwide in the past 10 years...
June 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28636439/functional-enrichment-of-mannanase-treated-spent-brewer-yeast
#6
Ruge Cao, Xingyue Yang, Wenting Shang, Zhongkai Zhou, Padraig Strappe, Chris Blanchard
In this study, the effect of Bacillus brevis produced β-mannanase on the nutrients diffusion (release) and antioxidant activity of spent brewer yeast (SBY) was investigated. Three pre-treatments were performed: (1) autolysis at 50°C for 24 h; (2) autolysis at 50°C for 24 h, with the addition of β-mannanase during the autolysis; (3) autolysis at 50°C for 24 h, and the β-mannanase was added for another 12 h treatment. The pre-treatments with the addition of β-mannanase caused significant cell wall degradation; markedly increased the yield of SBY extracts...
June 21, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28593696/synergistic-analgesic-anti-pyretic-and-anti-inflammatory-effects-of-extra-virgin-olive-oil-and-ibuprofen-in-different-experimental-models-in-albino-mice
#7
Walla'a A Osman, Dina A Labib, Mona O Abdelhalim, Elsayed M Elrokh
AIM: Olive oil was used in the past as a remedy for many diseases due to its unlimited benefits in health. This study was carried out to assess the analgesic, anti-pyretic and anti-inflammatory activities of extra virgin olive oil (EVOO) at a dose of 8 mL/kg body weight and to compare it with ibuprofen (IBU) as an individual drug therapy and in combination with two different doses of IBU (therapeutic dose 100 mg/kg and low dose 40 mg/kg), on different animal models in albino mice. METHOD: A total of 132 adult healthy male Swiss albino mice were used in this study...
June 7, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28587916/measurement-of-body-temperature-in-normothermic-and-febrile-rats-limitations-of-using-rectal-thermometry
#8
Rachael Dangarembizi, Kennedy H Erlwanger, Duncan Mitchell, Robyn S Hetem, Michael T Madziva, Lois M Harden
Stress-induced hyperthermia following rectal thermometry is reported in normothermic rats, but appears to be muted or even absent in febrile rats. We therefore investigated whether the use of rectal thermometry affects the accuracy of temperature responses recorded in normothermic and febrile rats. Using intra-abdominally implanted temperature-sensitive radiotelemeters we measured the temperature response to rectal temperature measurement in male Sprague Dawley rats (~200g) injected subcutaneously with Brewer's yeast (20ml/kg of a 20% Brewer's yeast solution=4000mg/kg) or saline (20ml/kg of 0...
June 3, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28587441/evaluation-of-brewers-spent-grain-as-a-novel-media-for-yeast-growth
#9
Sachindra T Cooray, Jaslyn J L Lee, Wei Ning Chen
Brewers' spent grain (BSG) is a by-product generated from the beer manufacturing industry, which is extremely rich in protein and fiber. Here we use low cost BSG as the raw material for the production of a novel growth media, through a bioconversion process utilizing a food grade fungi to hydrolyze BSG. The novel fermentation media was tested on the yeast Rhodosporidium toruloides, a natural yeast producing carotenoid. The yeast growth was analysed using the growth curve and the production of intracellular fatty acids and carotenoids...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28508436/bio-functional-properties-of-sardine-protein-hydrolysates-obtained-by-brewer-s-spent-yeast-and-commercial-proteases
#10
Elsa F Vieira, Olívia Pinho, Isabel Mplvo Ferreira
BACKGROUND: Canned sardine industry generates large amounts of protein rich waste, which demands a useful exploitation. This paper describes the potential use of muscle and viscera proteins from canned sardine by-products as substrate to obtain hydrolysates with biological and functional properties. Three enzymatic approaches, brewer's spent yeast (Bsy) proteases, Alcalase® and Neutrase® were applied to perform protein hydrolysis at the same proteolytic activity (1 U mL(-1) ), using an enzyme/substrate ratio of 20% (v/v), at 50 °C and for 7 h...
May 16, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28450459/experimental-evolution-reveals-favored-adaptive-routes-to-cell-aggregation-in-yeast
#11
Elyse A Hope, Clara J Amorosi, Aaron W Miller, Kolena Dang, Caiti Smukowski Heil, Maitreya J Dunham
Yeast flocculation is a community-building cell aggregation trait that is an important mechanism of stress resistance and a useful phenotype for brewers; however, it is also a nuisance in many industrial processes, in clinical settings, and in the laboratory. Chemostat-based evolution experiments are impaired by inadvertent selection for aggregation, which we observe in 35% of populations. These populations provide a testing ground for understanding the breadth of genetic mechanisms Saccharomyces cerevisiae uses to flocculate, and which of those mechanisms provide the biggest adaptive advantages...
June 2017: Genetics
https://www.readbyqxmd.com/read/28437805/anti-inflammatory-antipyretic-and-antinociceptive-effects-of-a-cressa-cretica-aqueous-extract
#12
Heba Mohammed Ibrahim Abdallah, Abdelsamed Ibrahim Elshamy, Abd El-Nasser Gaber El Gendy, Ahmed Mohamed Abd El-Gawad, Elsayed Abouelfotowh Omer, Marinella De Leo, Luisa Pistelli
Cressa cretica is a widely grown halophytic plant traditionally used for the treatment of different ailments. Previous investigations reported its biological activity on a wide spectrum of diseases. In this study, in vivo antinociceptive, anti-inflammatory, and antipyretic activities of C. cretica aqueous extract whole plant were evaluated. In addition, the total polyphenol content, the total flavonoid content, and the chemical characterization of the extract were performed. C. cretica showed writhing inhibition in acetic acid-induced peripheral nociception of 43 and 48 % at doses of 50 and 100 mg/kg, respectively...
April 24, 2017: Planta Medica
https://www.readbyqxmd.com/read/28417422/selection-of-an-artificial-diet-for-laboratory-rearing-of-opogona-sacchari-lepidoptera-tineidae-bojer-1856
#13
A Coelho, J M Milanez, R de Andrade Moral, C G B Demétrio, J R P Parra
The banana moth Opogona sacchari (Bojer) (Lepidoptera: Tineidae) is a polyphagous pest that can cause serious damage, in particular to banana crops in southern Brazil. The insect is a quarantine pest in several countries, including Argentina, the main consumer market for bananas from southern Brazil. Little information is available about the biology and ecology of this moth, such as a suitable diet for laboratory rearing. In order to provide support for integrated pest management of the pest, this study furnished data for selecting two diets suitable for continuous laboratory rearing of O...
April 17, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28342612/can-by-products-replace-conventional-ingredients-in-concentrate-of-dairy-goat-diet
#14
M Romero-Huelva, M A Ramírez-Fenosa, R Planelles-González, P García-Casado, E Molina-Alcaide
Intensive dairy goat production in the Mediterranean basin is based on imported conventional ingredients to be included in concentrates. Fourteen Murciano-Granadina goats in the middle of the third lactation were allocated into 2 groups of 7 animals each fed, respectively, a control diet based on alfalfa hay and concentrate in a 40:60 ratio, and a diet in which the concentrate included tomato fruits, citrus pulp, brewer's grain and brewer's yeast (T100CBY) to study the effect of diet on nutrient utilization, ruminal fermentation, purine derivatives excretion in urine, milk yield and composition, and methane emissions...
March 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28330081/emerging-cam-ziziphus-nummularia-with-in-vivo-sedative-hypnotic-antipyretic-and-analgesic-attributes
#15
Abdur Rauf, Jawad Ali, Haroon Khan, Mohammad S Mubarak, Seema Patel
Ziziphus nummularia from Rhamnaceae family is traditionally used for sedative-hypnotic, antipyretic and analgesic purposes; however, scientific validations are lacking. This in vivo study was undertaken to verify the above ameliorative properties of Z. nummularia root methanolic extract. Various fractions of the extract were assayed on Balb/c mice by open field, Brewer's yeast-induced hyperthermia and acetic acid-induced writhing experiments. The significance of the outcomes was analyzed with statistical tests...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28317769/protective-ability-against-oxidative-stress-of-brewers-spent-grain-protein-hydrolysates
#16
Elsa F Vieira, Diana Dias da Silva, Helena Carmo, Isabel M P L V O Ferreira
The protein fraction of Brewers' spent grain (BSG) was used as substrate to obtain hydrolysates with antioxidant activity. Three enzymatic approaches were applied: brewer's spent yeast (BSY) proteases, Neutrase® and Alcalase®, at the same proteolytic activity (1U/mL), using an enzyme/substrate ratio of 10:100 (v/v), at 50°C, 4h. Total Phenolic Content (TPC) and Ferric Ion Reducing Antioxidant Power (FRAP) of hydrolysates and fractions <10kDa and <3kDa were assayed. Additionally, the protective ability of <10kDa fractions against oxidative stress on Caco-2 and HepG2 cells was investigated...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28282294/in-vivo-analgesic-antipyretic-and-anti-inflammatory-potential-of-leaf-extracts-and-fractions-of-eria-javanica
#17
N M Mahmudul Alam Bhuiya, Mahmud Hasan, Zobaer Al Mahmud, Nazmul Qais, Mohammad Shah Hafez Kabir, Farhan Ahmed, Mir Muhammad Nasir Uddin
Background The objective of the study was to evaluate the antinociceptive, antipyretic and anti-inflammatory activities of ethanolic extract, methanolic extract and n-hexane and chloroform-soluble fractions of methanolic extract of Eria javanica leaves in animal model (rat and mice). Methods The anti-nociceptive potentials of the extracts were studied using the acetic acid-induced writhing test in mice and the antipyretic activity was investigated using yeast-induced pyrexia in rats. Anti-inflammatory activity test was done on rats at a dose by using carrageenan-induced paw edema test...
March 1, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28242466/elucidation-of-trna-cytochrome-c-interactions-through-hydrogen-deuterium-exchange-mass-spectrometry
#18
Yi-Ting Lo, Hung-Wei Huang, Yi-Chuan Huang, Jui-Fen Chan, Yuan-Hao Howard Hsu
Cytochrome c (cyt c) is a mitochondrial protein responsible for transferring electrons between electron transport chain complexes III and IV. The release of cyt c from the mitochondria has been considered as a commitment step in intrinsic apoptosis. Transfer RNA (tRNA) has recently been found to interact with the released cyt c to prevent the formation of the apoptosome complex, thus preventing cell apoptosis. To understand the molecular basis of tRNA-cyt c interactions, we applied hydrogen/deuterium exchange mass spectrometry (HDXMS) to analyze the interactions between tRNA and cyt c...
May 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28239492/performance-of-clarias-gariepinus-fed-dried-brewer-s-yeast-saccharomyces-cerevisiae-slurry-in-replacement-for-soybean-meal
#19
Shola Gabriel Solomon, Gabriel Arome Ataguba, Gabriel Enemona Itodo
Following disparity of earlier results, this study tested the performance of African catfish Clarias gariepinus fed dried brewer's yeast slurry meal (DBYM) based diets. Fingerlings of C. gariepinus with pooled mean initial weight of 1.58 ± 0.01 g were stocked in hapas (1 m × 1 m × 1 m) immersed in an earthen pond at a density of 15 fish per cage. Five diets with increasing substitution of soybean meal with 25%, 50%, 75%, and 100% of dried brewer's yeast and a control without dried brewer's yeast (0% substitution) were evaluated for 8 weeks...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28154948/reduced-production-of-diacetyl-by-overexpressing-bdh2-gene-and-ilv5-gene-in-yeast-of-the-lager-brewers-with-one-ilv2-allelic-gene-deleted
#20
Ting-Ting Shi, Ping Li, Shi-Jia Chen, Ye-Fu Chen, Xue-Wu Guo, Dong-Guang Xiao
Diacetyl causes an unwanted buttery off-flavor in lager beer. The production of diacetyl is reduced by modifying the metabolic pathway of yeast in the beer fermentation process. In this study, BDH2 and ILV5 genes, coding diacetyl reductase and acetohydroxy acid reductoisomerase, respectively, were expressed using a PGK1 promoter in Saccharomyces cerevisiae, which deleted one ILV2 allelic gene. Diacetyl contents and fermentation performances were examined and compared. Results showed that the diacetyl content in beer was remarkably reduced by 16...
February 2, 2017: Journal of Industrial Microbiology & Biotechnology
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