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| - Effects of Management on the Yield and High-Molecular-WeightPolysaccharide Content of Shiitake (Lentinulaedodes)Mushrooms
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| - Shiitake (Lentinulaedodes (Berk.) Pegler) mushroom production in the United States has increasedgreatly over the last twenty years. Additional expansion of the shiitake mushroom market should bepossible if the product can be marketed as a functional food, i.e., a food that has health-promotingeffects beyond its nutritional value. High-molecular-weight polysaccharides (HMWP) including lentinanin shiitake may promote human health. This study was conducted to determine if managementprotocols influence the HMWP of shiitake mushrooms. Results indicate that measuring the totalcarbohydrate content of water-extractable, ethanol-insoluble polysaccharides was a simple way toestimate HMWP. Results also indicate that log-grown shiitake contained more HMWP than didsubstrate-grown shiitake. Among log-grown shiitake, both mushroom strain and tree species influencedHMWP content. The results suggest that there is considerable variation among shiitake mushroomsin HMWP content and that production protocols influenced the HMWP content of mushrooms. Keywords: Lentinan; log-grown; substrate-grown; strain; tree species; carbohydrates; growth conditions; shiitake mushroom; Lentinula edodes
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