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当前课程知识点:Food Microbiology Testing >  Chapter 2 Routine experimental techniques of microorganism >  2.3 Microbial inoculation techniques >  2.3 Microbial inoculation techniques

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2.3 Microbial inoculation techniques在线视频

下一节:Supporting document

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2.3 Microbial inoculation techniques课程教案、知识点、字幕

第三节 微生物接种技术

微生物实验常用的接种技术包括

平板划线接种法 固体斜面穿刺接种法

斜面划线接种法 半固体穿刺接种法

液体接种法和平板点种法

下面我们详细介绍一下这几种接种技术

平板划线接种方法与平板划线分离法相同

这里就不再进行演示

固体斜面穿刺接种法

以三糖铁为例说明

在斜面上做好标记

用灼烧灭菌后的接种针蘸取少量菌体或孢子

采用先斜面“Z”形划线 后高层穿刺的方法

产酸变黄

产碱变红 产硫化氢变黑

产气可见气泡

观察和记录斜面 底层的产酸产碱现象 并对结果进行记录

斜面划线接种法

用灼烧灭菌后的接种环蘸取少量菌体或孢子

从斜面底部到顶端拖一条接种线

再自下而上的蜿蜒涂布

或直接自斜面底部向上蜿蜒涂布

也可以采用斜面“Z”形划线

培养后 观察菌是否生长良好

用灼烧灭菌后的接种针轻沾取少量菌体或胞子进行穿刺

然后沿穿刺线拉出

注意 操作时沿中心轴穿刺管中 不要穿到管底

观察培养后结果

仅沿穿刺线生长则表明该菌无动力

扩散生长则表明该菌有动力

液体接种法

用灼烧灭菌后的接种环

轻沾取少量菌体或胞子进行接种

然后塞上棉塞 灼烧接种环灭菌

然后将试管在手掌上轻轻打动

使菌体在培养基中均匀散开

培养后可见液体由澄清变为浑浊

平板点种法

用灼烧灭菌后的接种针轻沾取少量菌体或胞子

竖直穿刺接种于平板培养基表面

预先做好标记的部位至接近底部

观察是否有菌生长

及该菌是否有相应的溶血

溶解环或沉淀环现象

谢谢大家观看!

Food Microbiology Testing课程列表:

Chapter 1 Introduction

-1.1 Introduction

--1.1 Introduction

-Supporting document

-Chapter 1 Discussion

Chapter 2 Routine experimental techniques of microorganism

-2.1 Preparation of culture medium

--2.1 Preparation of culture medium

-2.2 Microbial separation techniques

--2.2 Microbial separation techniques

-2.3 Microbial inoculation techniques

--2.3 Microbial inoculation techniques

-2.4 Exercises

--Chapter 2 exercises

-Supporting document

-Chapter 2 Discussion

Chapter 3 The basic program of food microbiology testing

-3.1 Basic elements of food sample testing

--3.1 Basic elements of food sample testing

-3.2 Sample sampling scheme

--3.2 Sample sampling scheme

-3.3 Sample sampling, transporting, processing, testing and report

--3.3 Sample sampling, transporting, processing, testing and report

-3.4 Exercises

--Chapter 3 exercises

-Supporting document

Chapter 4 Detection of Aerobic Bacterial Count and Coliform in food

-4.1 Detection of Aerobic Bacterial Count

--4.1 Detection of Aerobic Bacterial Count

-4.2 The enumeration of Coliforms

--4.2 The enumeration of Coliforms

-4.3 Exercises

--Chapter 4 exercises

-Supporting document

-Chapter 4 Discussion

Chapter 5 Detection of Salmonella spp.

-5.1 Detection of Salmonella spp. GB4789.4-2016 (Ⅰ)

--5.1 Detection of Salmonella spp. GB4789.4-2016 (Ⅰ)

-5.2 Detection of Salmonella spp. GB4789.4-2016 (Ⅱ)

--5.2 Detection of Salmonella spp. GB4789.4-2016 (Ⅱ)

-5.3 Exercises

--Chapter 5 exercises

-Supporting document

Chapter 6 Detection of Staphylococcus aureus

-6.1 Qualitative method

--6.1 Qualitative method

-6.2 Plate counting

--6.2 Plate counting

-6.3 The MPN method

--6.3 The MPN method

-6.4 Exercises

--Chapter 6 exercises

-Supporting document

Chapter 7 Detection of moulds and yeasts

-7.1 Moulds and yeasts count

--7.1 Moulds and yeasts count

-7.2 Exercises

--Chapter 7 exercises

-Supporting document

Chapter 8 Quality control of food microbiology testing

-8.1 How to control the quality of food microbiology testing

--8.1 How to control the quality of food microbiology testing

-8.2 Quality control of food microbiology testing

--8.2 Quality control of food microbiology testing

-8.3 Requirements of process control

--8.3 Requirements of process control

-8.4 Exercises

--Chapter 8 exercises

-Supporting document

-Chapter 8 Discussion

Chapter 9 Modern food microbiology testing technology

-9.1 Modern food microbiology testing technology (Ⅰ)

--9.1 Modern food microbiology testing technology (Ⅰ)

-9.2 Modern food microbiology testing technology (Ⅱ)

--9.2 Modern food microbiology testing technology (Ⅱ)

-9.3 Exercises

--Chapter 9 exercises

-Supporting document

2.3 Microbial inoculation techniques笔记与讨论

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