茯砖茶分离菌对初烤烟叶的改质效果

从茯砖茶中分离并鉴定一株冠突散囊菌(Eurotium cristatum),并将其制成不同浓度的孢子悬液接种到云85,B3F级初烤烟叶上。在固定湿度(RH,70%±2%),不同温度下,发酵50d,观察该菌对烟叶品质的改善效果。理化指标测定及感官评吸结果显示:在30℃,孢子浓度为1×107个/mL条件下,该菌对烟叶品质改善显著,还原糖、水溶性总糖含量总体增加,全钾含量降低,糖/碱比、氮/碱比更加趋向于最适比例;烟叶香气质、香气量变好,杂气和刺激性降低,甜感和细腻度都有所增加,烟碱含量下降,总体质量得到明显提高。 

Research of quality of flue-cured tobacco by Eurotium cristatum from Fuzhuan tea

Eurotium cristatum, a fungus from Fuzhuan brick tea, was separated and identified.In order to improve the quality of tobacco, the fungi was made for different concentrations of spore suspension and incubated to cloud 85, B3 F flue-cured tobacco leaf at constant related humidity ( 70% ± 2%) for 50 days.The results of chemical analysis and artificial smoking showed that the sugar, water soluble total sugar with a overall increasing.The total potassium were reduced and sugar /alkali, nitrogen /alkali tended to the optimal ratio at condition of 30℃, spore concentration was 1 × 107 cell /mL.At the same time, the aroma quality and aroma quantitative tended to be better; mixed gas, nicotine content and irritation plump were reduced; sweetness and sophistication were increased. The overall quality of tobacco had been improved significantly.