A test piece of selective chromogenic medium for Staphylococcus aureus belongs to the field of microbial detection technology. Its characteristics are as follows: preparation of chromogenic medium for Staphylococcus aureus, containing tryptone 6-14 g, yeast extract 4-8 g, glycerol 1-10 mL, sodium chloride 65-100 g, potassium dihydrogen phosphate 1-10 g, potassium dihydrogen phosphate 5-15 g, agar powder 7-20 g, and bacteriostatic mixture 10-40 G. The color agent is 0.001~1g. The test sheet is prepared. Four pieces of culture medium test sheet are attached to the transparent PU film coated with pressure sensitive adhesive, then pure cotton degreased gauze is attached to the test sheet, and then fixed release sheet is attached. The beneficial effect is that the positive result of the invention has obvious color development and accurate detection result. The reagents selected by the invention are non-toxic and can be directly contacted with the skin. The reagent used in the invention is cheap and common, and the development cost is low. The present invention utilizes culture medium coloration, rather than colony coloration of previous patents, and is easier to observe and apply to test sheets.
【技术实现步骤摘要】
金黄色葡萄球菌选择性显色培养基测试片
本专利技术属于微生物检测
技术介绍
金黄色葡萄球菌(Staphylococcusaureus)广泛分布于自然界,是人类的一种重要的致病菌。它既是造成伤口感染的最常见致病菌,能产生凝固酶等多种致病物质,可引起化脓性炎症、葡萄球菌性肠炎等疾病,严重时可导致瘫痪,乃至死亡;同时还是一种重要的食源性致病菌,其产生的耐热肠毒素可引起食物中毒,造成的危害仅次于沙门氏菌和副溶血性弧菌。为确保食品安全,满足人们对生活中致病微生物的检测需求,改善人们的医疗卫生条件,保护人民身体健康,世界各国对不同食品中的金黄色葡萄球菌均做出明确规定,我国颁布食品微生物检测标准GB4789.10-2016,明确规定食品中不得检出金黄色葡萄球菌。目前,对于金黄色葡萄球菌的定性检测,以选择性培养基为主。其中,最常用的是Baird.parker琼脂平板,菌落呈黑色,周围产生透明圈。共需经过富集培养,分离纯化,卵磷脂酶、凝固酶实验、镜检观察等多个步骤,检测周期3-5d,时间长,费用高。同时,因为其菌落的显色面积小,肉眼观察下很容易误判,导致假阴性。此外,非金黄 ...
【技术保护点】
1.一种金黄色葡萄球菌选择性显色培养基测试片,其特征是:制取金黄色葡萄球菌显色培养基,每1000mL培养基中含有胰蛋白胨6~14g,酵母浸粉4~8g,甘油1~10mL,氯化钠65~100g,磷酸二氢钾1~10g,磷酸氢二钾5~15g,琼脂粉7~20g,抑菌剂混合物10~40g,显色剂0.001~1g;制取测试片,在涂有压敏胶的医用透明pu膜上摆放贴附有四块培养基试纸片,再贴附纯棉脱脂纱布,再贴附固定用离型纸。
【技术特征摘要】
1.一种金黄色葡萄球菌选择性显色培养基测试片,其特征是:制取金黄色葡萄球菌显色培养基,每1000mL培养基中含有胰蛋白胨6~14g,酵母浸粉4~8g,甘油1~10mL,氯化钠65~100g,磷酸二氢钾1~10g,磷酸氢二钾5~15g,琼脂粉7~20g,抑菌剂混合物10~40g,显色剂0.001~1g;制取测试片,在涂有压敏胶的医用透明pu膜上摆放贴附有四块培养基试纸片,再贴附纯棉脱脂纱布,再贴附固定用离型纸。2.如权利要求1所述的一种金黄色葡萄球菌选择性显色培养基测试片,其特征是:每1000mL培养基中含有胰蛋...
【专利技术属性】
技术研发人员:刘继哲,张司晨,邓永鹏,舒灵玉,孙婷婷,孙基丰,于源华,
申请(专利权)人:长春理工大学,
类型:发明
国别省市:吉林,22
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。