Faculty of Renewable Natural Resources, Department of Wood Science and Technology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
The Institute of Tropical Agriculture, Domeabra, Kumasi, Ghana.
PLoS One. 2023 Jun 29;18(6):e0287532. doi: 10.1371/journal.pone.0287532. eCollection 2023.
Influence of chemical composition of sawdust on the nutritional profile of oyster mushrooms (Pleurotus ostreatus) has yet to receive significant research attention. This information will help mushroom growers to select specific sawdust for the production of mushroom with desired dietary preferences. This study assessed the influence of the chemical composition of sawdust on the macronutrients and ash content of the pearl oyster mushrooms. The American Standard for Testing Materials and other widely accepted protocols were used to determine the C-N ratio, pH, lignin, hemicellulose and cellulose contents of mixed sawdust from tropical wood species. The study evaluated the fat, crude fibre, crude protein, carbohydrate, and ash content of the oyster mushroom cultivated on the sawdust. Cellulose constituted the largest component of the sawdust (47.82%), followed by lignin (33.29%). The yield of the mushroom (on 0.05 kg of sawdust) ranged from 490.1 to 540.9 g (biological efficiency: 44-50%); the average carbohydrates constituent in the mushroom was 56.28%. pH of the sawdust influenced the crude protein, carbohydrate, fat and ash content of oyster mushrooms (p<0.05) most significantly. The hemicelluloses also had a significant effect (p<0.05) on the mushroom's minerals, fat and crude fiber content. The study revealed that the mushroom producers would likely obtain high protein content using sawdust with low pH (slightly acidic to slightly basic) in the oyster mushroom. Mushrooms grown on substrates, rich in hemicelluloses, had low fat and high crude fiber content.
木屑的化学成分对牡蛎菇（Pleurotus ostreatus）营养成分的影响尚未得到广泛关注。这些信息将帮助蘑菇种植者选择特定的木屑来生产具有特定饮食偏好的蘑菇。本研究评估了木屑化学成分对珍珠牡蛎菇的主要营养成分和灰分含量的影响。本研究采用美国材料试验协会和其他广泛接受的方法，测定了热带木材混合木屑的 C-N 比、pH 值、木质素、半纤维素和纤维素含量。本研究评估了在木屑上栽培的牡蛎菇的脂肪、粗纤维、粗蛋白、碳水化合物和灰分含量。纤维素构成木屑的最大成分（47.82%），其次是木质素（33.29%）。蘑菇的产量（每 0.05 公斤木屑）在 490.1 到 540.9 克之间（生物效率：44-50%）；蘑菇中平均碳水化合物含量为 56.28%。木屑的 pH 值对牡蛎菇的粗蛋白、碳水化合物、脂肪和灰分含量影响最大（p<0.05）。半纤维素对蘑菇的矿物质、脂肪和粗纤维含量也有显著影响（p<0.05）。研究表明，在牡蛎菇中，使用 pH 值较低（微酸性至微碱性）的木屑，蘑菇生产者可能会获得高蛋白含量。在富含半纤维素的基质上生长的蘑菇，脂肪含量低，粗纤维含量高。
