茶梗代料对白灵菇的生长及品质的影响

添加不同用量的茶梗进行白灵菇代料栽培,并分析白灵菇的菌丝活力、出菇表现、产量及营养成分。结果表明:白灵菇在茶梗代料培养基中菌丝活力、出菇表现比对照(未添加茶梗)差;产量、生物学效率、子实体粗蛋白及氨基酸总量均比对照低,且随着茶梗添加量的增加呈下降趋势;但子实体粗脂肪、粗纤维、灰分、Fe、Zn等营养成分及必需氨基酸与非必需氨基酸(E/T)比值均比对照高,且随着茶梗添加量的增加呈上升趋势,分别比对照高出0.08%~0.57%、0.15%~1.3%、0.32%~2.45%、0.28%~0.63%、1.21~4.29μg·hg~(-1)、0.02%~4.45%。综上所述,茶梗作为代料栽培白灵菇可行,但配方有待进一步优化。

Effects of Cultivation Substrates Containing Tea Stalks on Growth and Quality of Pleurotus nebrodensis

Utilization of tea stalks as replacement for other ingredients in the substrate for cultivation of Pleurotus nebrodensis was studied.The mycelial vitality,primordia formation,and anutrient yield of the mushrooms grown under different formulations of medium were monitored.The results showed that the mycelial vitality and fruiting of the mushrooms were inferior to those of control when tea stalks were included in the culture medium.The yield, biological efficiency,crude protein content,and total amino acid content of the fruiting bodies were all lower than those of control.They decreased with increasing amount of tea stalks.On the other hand,the contents of crude fat, crude fiber,ashes,Fe or Zn,and the ratio of essential amino acids to nonessential amino acids of the fruiting bodies were higher than those of control,in the ranges of 0.08%-0.57%,0.15%-1.3%,0.32%-2.45%,0.28%-0.63%,1.21%-4.29 ug/hg,and 0.02%-4.45%,respectively.They increased with increasing tea stalk addition.Consequently,the potential of tea stalk utilization in cultivating P.nebrodensis depended on the overall balance on the quality of the resulting mushrooms as well as an optimized substrate formulation.