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None.We have determined the production profiles of major ligno(hemi)cellulolytic enzymes at different stages of the mushroom development cycle during industrial scale cultivation of Pleurotus eryngii on supplemented agri-wastes. Endo-1,4-β-glucanase, cellobiohydrolase and endoxylanase levels remained relatively low during substrate colonization, increased sharply when small fruit bodies appeared, and peaked at maturation. β-Glucosidase and β-xylosidase levels decreased when substrate colonization was complete, increased with the appearance of small fruit bodies and primordia, respectively, and reached maxima at maturation. Laccase peaked along with substrate colonization but, after falling sharply in the upper substrate layers, remained relatively low until postinduction. Levels increased slightly when primordia appeared, fell to minimal values during the small and mature fruit body stages, and increased again postharvest. Manganese peroxidase (Mn-P) exhibited a similar pattern initially but high enzyme levels also coincided with primordia formation. Laccase and Mn-P activity patterns were compatible with a lignin-degradation function associated with substrate colonization and, in the former case, a putative role in fruit body morphogenesis. Based on the relatively low levels of polysaccharidases recorded during the initial stages of substrate colonization, we conclude that reducing sugar levels in noncolonized substrate were adequate for sustainable vegetative growth at that stage. We further conclude that the increase in enzyme production later in the developmental cycle was consistent with the replenishment of depleted reducing sugar from cellulose in the growth substrate to levels required for fruit body formation. These data provide new information describing combined temporal and spatial enzyme production profiles throughout the mushroom development cycle under a set of conditions used in industrial scale production.Fruiting bodies of Astraeus hygrometricus mushroom grown wild in the forests of Jharkhand, India were investigated for their proximate nutritional composition and taste imparting nonvolatile components. Fruiting bodies contained good amount of total carbohydrates (55.76%), reducing sugars (15.98%), protein (16.02%), and dietary fiber (39.78%) but were low in fat (3.5%), ash (3.8%), and energy (159.5 kcal). Fatty acids were represented by monounsaturated C181n9c oleic acid (4.59%) and saturated C160 palmitic acid (2.63%). In vitro digestibility of protein is an indicator of its availability to human body and A. hygrometricus has 33.2% in vitro digestibility. Among the minerals found (mg/100 g), potassium (K, 1930.0) was major mineral followed by calcium (Ca, 443.0), magnesium (Mg, 434.0), sodium (Na, 155.0), iron (Fe, 127.0), manganese (Mn, 16.0), and selenium (Se, 1.60). Pro-vitamin D2 (ergosterol) was also determined to be 1.09 mg/g. Analysis of soluble sugars indicated that mannitol (11.22 mg/g) was the major sugar alcohol conferring sweetness to the fruiting bodies. Among total free amino acids (8.20 mg/g), seven essential amino acids (3.9) and eight nonessential amino acids (4.3) were detected. Leucine (0.92) and tyrosine (0.98) were the major essential and nonessential amino acids, respectively. Aspartic (0.61) and glutamic acid (0.63) were also present in AH and responsible for its MSG like taste. Thus, A. hygrometricus is a good source of free essential amino acids and selenium, which is not synthesized by humans. Meaty flavor of the fruiting body of A. hygrometricus was mainly due to umami 5'-guanosine monophosphate (2.43 mg/g). find more Sweet taste and meaty flavor of the mushroom were due to nonvolatile taste components including soluble sugars and polyols, MSG like aspartic and glutamic acid, and umami 5'-nucleotide. Overall A. hygrometricus proved its edibility as a tasty and nutritional food.Ganoderma lucidum polysaccharides (GLP) are one of the major bioactive components with many beneficial properties. In the present study we aimed to systematically evaluate the effects of GLP on lipid metabolism in human (HPA-v) and murine adipocytes (3T3-L1). Cell viability was assessed by MTT assay. Lipid accumulation in mature adipocytes were evaluated by ORO staining and quantified using the triglyceride (TG) assay. Lipolysis was investigated by measuring the free glycerol released in the cell culture medium after treatments. The mRNA and protein levels of key genes regulating lipid metabolism were determined by qRT-PCR and western blotting in HPA-v cells. ORO staining showed that GLP suppressed lipid accumulation similarly in both HPA-v and 3T3-L1 cells. TG assay confirmed that GLP significantly inhibited cell differentiation (p less then 0.001). The lipolysis assay showed that GLP enhanced triglyceride hydrolysis in both adipocytes (p less then 0.05). GLP stimulated AMPK phosphorylation, which promoted the phosphorylation of ACC1, its downstream target. qRT-PCR and western blotting showed that the genes encoding transcription factors for adipocyte differentiation (PPARγ, C/EBPα, and SREBPlc) and certain adipogenic genes (ACC1, PLIN1, and FASN) were downregulated (p less then 0.05). The lipolytic gene HSL was upregulated and highly phosphorylated (activated) at mRNA and protein levels, respectively, upon GLP treatment. These results suggested that GLP possessed beneficial antiadipogenic effects and can potentially be developed into antiobesity products.Crude Trametes versicolor exopolysaccharides (cEPS) were used for antioxidative activity testing. Obtained results revealed high ability of cEPS for DPPH free radical scavenging and high chelating ability at the highest tested concentration (20 mg/mL), while the reducing power was significantly lower. However, based on the EC50 values, antioxidative activities of the cEPS decreased in the following order reducing power > DPPH scavenging ability > chelating ability. Due to the high carbohydrate and β-glucan content it is assumed that they are the main carriers of cEPS antioxidative activities. D-glucose was the main monosaccharide (87.18 ± 0.27%) while the dominant amino acids were L-lysine (L-glutamic and L-aspartic acid), which are amino acids with taste similar to the monosodium glutamate. In addition, content of sweet tasting amino acids compared with the group of bitter tasting amino acid was 2.1 times higher, indicating favorable composition of cEPS protein fraction for food industry applying.
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