不同品种茯砖茶中优势微生物的分离鉴定

摘要

从湖南地区采集18个不同品种茯砖茶样品,采用稀释平板法分离得到18株优势菌,观察其平板形态特征与生长特征,以及在电镜下有性与无性生殖结构等特点,初步确定其中15株优势菌为散囊菌属:8株冠突散囊菌(Eurotium cristatum)、3株谢瓦散囊菌(Eurotium chevalieri)、2株肋状散囊菌(Eurotium costiforme)、l株阿姆斯特丹散囊菌(Eurotium amstelodami)和l株蜡叶散囊菌(Eurotium herbariorum；还有3株非散囊菌属优势菌为黑曲霉(Aspergillus niger).结果表明茯砖茶中优势微生物存在较大差异.%By using the dilution plate method, 18 dominant microorganism strains were separated from 18 different kinds of fu -brick tea samples in Hunan. Based on their morphological and growth characteristics in plate culture medium, as well as sexual and a-sexual reproductive structure features under electron microscope, the separated IS dominant strains were identified as Eurotium, including 8 Eurotium cristatum strains, 3 Eurotium chevalieri strains, 1 Eurotium costiforme strains, 1 Eurotium amstelodami strain and 1 Eurotium herbariorum strain, and the isolated other 3 dominant strains were ascertained to be Aspergillus niger. The results showed that there was obvious difference in dominant microorganisms among different kinds of fu - brick tea.