Bacteria and fungi are grown on or in microbiological media of different types. Aseptic transfer of liquids microbiology lab youtube. Refer to your laboratory text for various methods of transferring microbial cultures. View lab report lab report 3 aseptic technique and isolation of bacteria from hmm 1011 at multimedia university, bukit beruang.
This led semmelweis and lister to develop aseptic techniques, which prevented pathogens from entering the body during childbirth or surgery. In the microbiology lab we use aseptic technique to. Learn quiz microbiology lab aseptic technique with free interactive flashcards. It has current stepbystep instructions wiith color photographs of various aseptic techniques. This manual, from the microbiology society, provides a basic introduction to microbiology, aseptic technique and safety.
Experiment 1 culture transfer technique purpose technique of aseptic removal and transfer of microorganisms for subculturing. You will be provided with staphylococus epidermidis in a broth and on a plate. Manipulation of the tubes, plates and transfer tools requires patience and practice and is vital to success in the microbiology laboratory. Produce nutrient agar na plates, na slants, and nutrient broths nbwhich will be used in.
An introduction to microbiology, aseptic technique and safety page number preparation. Trust the leader in cryopreservation techniques, with. Media and equipment selection sterile work area for labs with cell culture hoods. Dec 02, 20 each week in microbiology lab, students perform different techniques and work on different projects. Such techniques are essential for experiments that require growing cells. The common point between the two terms is that they are both techniques that strive to get rid of microscopic organisms that can be harmful and risk the safety of an environment, a liquid, a wound or a tool among other things. This yellow cover document explains the need, outlines the risks and points the way to best practice.
At first, actions should be slow, deliberate, and controlled with the goal being for aseptic technique to become second nature when working at the bench. Concepts in sterile preparations and aseptic technique. Practicing aseptic technique with microbial cultures. Practical aseptic processing download ebook pdf, epub. Aseptic technique and transfer napa valley college. It is a fundamental skill for working in a microbiology laboratory. Bacteria can be isolated from nearly any surface including inanimate objects and human skin. Click download or read online button to get practical aseptic processing book now. Describe the different formats of media, plate, tube etc. Asepsis is the state of being free from diseasecausing microorganisms such as pathogenic bacteria, viruses, pathogenic fungi, and parasites. Each week in microbiology lab, students perform different techniques and work on different projects. Learning these procedures calls for training and practice. Aseptic technique microbiology resource center truckee.
Module context this module introduces microbiological laboratory techniques to be used for analysis of coliforms bacteria can be used as indicators of pollution. Basic practical microbiology why microbiology matters. This site is like a library, use search box in the widget to get ebook that you want. This manual has been written for a righthanded person. Aseptic technique will always be mentioned but might not be emphasized as part of the new procedures. Briefly flame the lip of the tube while rotating the tube to ensure no microorganisms remain on the lip see figure 3. To acquire the skill of aseptic technique in the field of microbiology. Laboratory exercises in microbiology cuny academic works. To isolate a microorganism from a mixed culture to obtain a pure culture. Aseptic technique refers to a set of routine procedures done to prevent sterile solutions and cultures from becoming contaminated by unwanted microorganisms in the laboratory. Carry out aseptic technique for the removal and transfer of microorganisms for culturing. Choose from 500 different sets of microbiology lab aseptic technique flashcards on quizlet. However, these techniques cannot provide real time data and require a. It reduces bacterial contamination since the bacteria, even if they get into the plate in.
Practicing aseptic technique with microbial cultures continued 2 21 linn cientiic nc all ights esere 6. To prevent contamination of cultures and media from microbes in the environment. Objectives to demonstrate good aseptic technique in culture transfer or inoculation and in handling sterile materials. The correct practice of this technique requires the understanding of some principles and facts. Proper aseptic technique prevents contamination of cultures from. Microbiologists use aseptic technique for a variety of procedures such as transferring cultures, inoculating media, isolation of pure cultures, and for performing microbiological tests. Introduction to microbiology, sterile technique and micropipetting background. Basic protocols, issue 63, microbiology, aseptic technique, sterile field, serological pipette, micropipettors, pipetman, cell culture.
The goal is to reach asepsis, which means an environment that is free of harmful microorganisms. How to properly inoculate from broth to broth, broth to slant, and broth to plate tsb, nas, nap duration. An aseptic technique experiment was conducted to test the effects of aseptic technique on the transfer of target bacteria, sarcina aurantiaca s. There may be images in this book that feature models. The goal of asepsis is to eliminate infection, not to. Conventional microbiology plating techniques such as the spread or pour plate method is used to measure bacterial growth 18. An introduction to microbiology, aseptic technique and safety as well as causing a familiar range of diseases in animals and plants and problems in food spoilage and deterioration of other materials, microbes are also our invisible allies. As we have seen in the previous exercise, contamination is a serious concern in the microbiology laboratory. Aseptic technique and the transfer of microorganisms theory. Introduction to microbiology, sterile technique and. Aseptic transfer technique is important to prevent contamination of the culture being maintained as well as yourself. The microbiology society, in association with the microbiology in schools advisory committee misac has also produced a book of 21 practical investigations which complements the manual practical. Its kind of superseded now that biological safety cabinets are commonplace as you can do work and keep things. Explain how to sterilize it, and how to distribute it in different formats.
Microbiology laboratory skills 4 microbiology laboratory thinking skills 5 microbiology laboratory safety 6 microbiology laboratory skills checklist 7 the compound microscope 8 hand washing 12 aseptic transfer techniques 14 preparing a smear and simple stain 20 gram staining 24 acidfast staining 28 endospore staining 31 motility test 33. Learn microbiology lab aseptic technique with free interactive flashcards. The aseptic technique is a method of preventing the transmission of infection to the patient during the performance of various clinical procedures. Alternatively, if too many bacteria are plated, then overlap of cells may. Learning outcome 2 requires an induction into the importance of using aseptic techniques and carrying out risk assessments prior to handling live specimens.
Because bacteria are relatively simple organisms and are amenable to experimental manipulation, they have provided elegant systems for basic research. Aseptic technique is a means of performing lab work that greatly reduces the risk of contamination. In order to illustrate that microorganisms are all around us and to demonstrate the necessity for proper aseptic technique, contaminate three trypticase soy agar plates as follows. Hmm1011 basic microbiology lab report 3 aseptic technique and. Part 1 of the book includes information on good microbiological laboratory practice, equipment, preparation of culture media, sterilisation and disinfection, inoculation, aseptic technique, incubation, cultures, contamination and working with moulds, bacteria and yeasts. In the microbiology laboratory, pure cultures of microorganisms are constantly being manipulated for the purpose of performing tests or simply for maintaining a viable culture. Meaning of aseptic technique in microbiology medical term.
These will be shared with the table and will be found at the front of each table in a white plastic rack. Rather, use sterile pipettes for the aseptic transfer of media. All five methods incorporate aseptic technique, or procedures that maintain the sterility. Microbiology is a popular option for practical work in schools.
The only thing on your lab bench should be the equipment you are working with and your lab book. Jan 11, 2014 aseptic technique the media on which you culture desirable microorganisms will readily grow undesirable contaminants, especially molds and other types of fungus, and bacteria from your skin and hair. The simplest and most economical way to reduce contamination from airborne particles and aerosols e. All five methods incorporate aseptic technique, or procedures that. Aseptic technique is absolutely necessary for the successful establishment and maintenance of plant cell, tissue and organ cultures. The term often refers to those practices used to promote or induce asepsis in an operative field of surgery or medicine to prevent infection. An introduction to microbiology, aseptic technique and safety preparation. Microbiology exercise 6 and 7 pure culture technique and aseptic transfer of microorganisms and cultural characterization of bacteria. This includes medical and laboratory techniques which deal with cultures and human cells and tissue for transplantation. There are also tables of the available products, stability considerations and health and safety issues. Christie t ammirati md, in surgery of the skin, 2005.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Sterile work area for labs with cell culture hoods. Aseptic technique is a fundamental and important laboratory skill in the field of microbiology. General aseptic techniques in microbiology laboratory. The surgical aseptic technique and sterile field guideline provides information, support and evidencebased practices to health care professionals performing invasive surgical procedures e of operating rooms or outsid in communitybased health care settings, such as. However, the risk of contamination of lab cultures or the environment can be greatly reduced by the use of proper aseptic techniques. Media, incubation, and aseptic technique objectives 1. Correctly sterilize and flame transfer instruments and tubes. Aseptic technique is a set of principles and practices used by cell culture workers to reduce the presence of unwanted microorganisms or other cell lines in their cultures. Semesterlong assessment of aseptic technique in microbiology. This manual, which explains the basic techniques necessary to carry out microbiology experiments safely and effectively, is intended as a guide for teachers and technicians.
Laboratory safety adapted from the american society of microbiology website. Jan 10, 2017 it avoids contamination by the microbes that are present in the air when you want to open a sterile tube or a tube of cultured microbes. Aseptic technique in microbiology explanation free. Choose from 500 different sets of quiz microbiology lab aseptic technique flashcards on quizlet. Why is the aseptic technique important in microbiology. Aseptic technique, designed to provide a barrier between the microorganisms in the environment and the sterile cell culture, depends upon a set of procedures to reduce the probability of contamination from these sources. Remove the tube cap and hold it between your little finger and ring finger of the hand holding the loop see figure 2.
Jun 12, 2017 aseptic technique is essentially the backbone of microbiology. Concepts in sterile preparations and aseptic technique is an independent publication and has not been authorized, sponsored, or otherwise approved by the owners of the trademarks or service marks referenced in this product. When working in a microbiology laboratory, aseptic technique is fundamental to the success and safety of an experiment. The purpose of this experiment is to gain knowledge of how to properly use aseptic techniques to transfer cultures, learning about cultured media and how to distinguish various types of microbial growths as. What is the role of aseptic techniques in a microbiology lab. Aseptic technique an overview sciencedirect topics. To demonstrate skill in isolation of organisms from a mixed culture using selective and differential media. In the mid1800s, louis pasteur developed the techniques of aseptic. An introduction to microbiology, aseptic technique and safety.
Guidelines for asepsis for invasive surgical procedures. The in vitro environment in which the plant material is grown is also ideal for the proliferation of microorganisms. Always use the proper aseptic technique when transferring cultures from one medium to another. Bacteria represent the most widely distributed and metabolically diverse group of organisms. To transfer cultures from one medium by inoculating another medium. Sterile aseptic technique michigan state university. Aseptic technique is a procedure used by medical staff to prevent the spread of infection. This task is done essentially as described on the previous page, except. Surgical skill does not negate the need for aseptic technique but the competence with which the tissues are handled is closely tied to the degree of contamination a wound. Simulating aseptic techniques using fluorescent dye as a substitute for a live culture is a useful starting point. Testing sensitivity to antimicrobial substances 21. Aseptic technique is a set of best practices that healthcare professionals use to prevent the transfer of germs in clinics and hospitals and protect patients from infection. Aseptic technique and culturing microbes lab 3 brittney case august 4th 20 section. Remove the lid from the first agar plate and place the exposed agar portion in or out of the building for the duration of todays lab.
Generally, aseptic techniques are procedures or processes. Aseptic transfer of cultures and sterile solutions 19 appropriate instruments for aseptic transfer procedures 19 preparing cultures of bacteria and yeasts for class use 20. Aseptic technique and the transfer of microorganisms. To prevent contamination of these articles, books, coats, backpacks, etc. Asepsis is a condition in which no living diseasecausing microorganisms are present.
This chapter describes common laboratory procedures that can reduce the risk of culture con taminations sepsis, collectively referred as aseptic technique. They also include all of the prophylactic methods, working. Aseptic transfers growth medium sterilization microbiology. Laboratory manual and workbook in microbiology applications to patient care 7th edition josephine a. Aseptic technique aseptic technique refers to a procedure that is performed under sterile conditions. The microbiology society, in association with the microbiology in schools advisory committee misac.
Aseptic transfer of cultures and sterile solutions 19 preparing cultures for class use 19 part 2. In the context of medicine, aseptic techniques are used by medical staff to prevent the spread of infection, or to rid the environment of pathogenic microorganisms. A fundamental and important laboratory skill in the field of microbiology. Sterile products and aseptic techniques for the pharmacy. Students need a way to constantly have aseptic technique reinforced. Aseptic technique in microbiology definition of aseptic. Looking for online definition of aseptic technique in microbiology in the medical dictionary. Dec 21, 2015 aseptic transfer of liquids microbiology lab. The main document is guidance for aseptic transfer processes in the nhs. Updated in a brand new edition, this book covers the latest principles of aseptic technique, terms, methods, products and includes a howto on standard sterile product preparations.
660 438 993 533 891 838 473 684 820 1379 1426 549 1219 1000 81 1128 242 1352 1089 1160 1226 343 563 255 690 1110 453 865 971 1493 116 1356 322 656 429 386 17 534 1312