迷迭香(Rosmarinus officinalis)提取残渣栽培糙皮侧耳

摘要

食品工业中用迷迭香提取抗氧化物质后的残渣(rosemary processing waste RPW)拌入粉碎的玉米粒可以用作栽培糙皮侧耳的培养料.提取抗氧化剂后的迷迭香残渣RPW-1中所含提取残留的丙酮对栽培有害,RPW-1直接栽培糙皮侧耳所获子实体产量比用RPW-2(废料充分通气,去除残存的丙酮)平均低49%.试验中获得最高生物效率(67%)的培养料配比为RPW-2中加入30%(w/w)粉碎的玉米粒(crushed corn seeds CCS)和2%CaCO3.增加培养料中的麸皮(wheat bran WB)比例(降低C/N比)可加快菌丝生长速度,但通常导致子实体产量降低.试验中菌丝生长最快(23 d生长9.9 cm)的培养料配比为RPW-2中添加30%(w/w) CCS 和30% (w/w) WB,/N比为24.%Rosemary processing waste (RPW) generated after extraction of antioxidant components for the food industry, in combination with crushed corn seeds, represented a suitable growth substrate for the cultivation of Pleurotus ostreatus . On average, fruit body yields were 49% lower on substrate mixtures containing RPW1, containing residual acetone from the antioxidant extraction process, compared to substrates incorporating RPW2 which had been allowed to stand in wellaerated conditions in order to remove residual solvent. The highest Biological Efficiency value (67%) were recorded with a substrate mixture containing 30% (w/w) crushed corn seeds (CCS) mixed with RPW2 and 2% CaCO3. Increasing proportions of wheat bran (WB) in the mixtures decreased the C/N ratio, had a positive effect on mycelial growth rates, but generally resulted in lower fruit body yields. The highest vegetative growth rate (9.9 cm in 23 days) was recorded on substrate mixtures with a C/N ratio of 24 and containing RPW2 supplemented with 30% (w/w) CCS and 30% (w/w) WB.