菌渣培养大白口蘑研究

为缓解食用菌产业中的菌渣污染、节省原材料、提高菌渣利用效率,分别添加质量分数为0%～80%的菌渣培养大白口蘑,并对菌丝生长速度、生长势、污染率、生物学转化率以及还原糖、总糖、粗蛋白质、粗脂肪、粗纤维等主要营养成分进行统计。结果表明:用菌渣添加比例分别为10%、20%、30%和40%的4个配方栽培大白口蘑的生物学转化率均在90%以上,产量表现均适宜应用于生产;添加一定比例的菌渣有利于大白口蘑子实体中还原糖、粗蛋白质、灰分含量的增加,而总糖、粗脂肪和水分含量的变化不明显,同时粗纤维含量有所降低,这与菌渣自身的营养成分特点有密切关系;配方4(菌渣为40%)的菌丝生长速度和污染率、生物学转化率均表现最好,菌丝生长平均速度为0.280cm·d-1,污染率为0%,生物学转化率为97.85%。结果表明培养料中添加40%的菌糠培养大白口蘑是可行的,具有一定的社会和经济效益。

Studies on fungus dregs cultivating Tricholoma lobayense Heim

In order to reduce the pollution of fungus dregs and conserve the use of raw materials,formulas containing fungus dregs ranging from 0% to 80% were added to cultivate Tricholoma lobayense Heim,and the growth rate,pollution ratio,biological conversion rate and some important nutritional factors(e.g.reducing sugar,total sugar,crude protein,crude fat and fiber) were monitored and measured.The results indicated that biological conversion rate of formulas 1-4(containing 10%,20%,30% and 40% of fungus dregs respectively) were all above 90% and hence suitable for further application.The reducing sugar,crude protein and ash contents of T.lobayense were increased,and the crude fiber content was decreased with the addition of fungus dregs,however,the total sugar,crude fat and water contents were not affected.Among all the formulas,formula 4(containing 40% fungus dregs) yielded the highest growth rate of 0.280 cm·d-1 and biological conversion rate of 97.85%,and with zero contamination.In conclusion,fungus dregs can be used in the cultivation of T.lobayense,and can effectively improve its yield and quality.