13.3 Using Chemicals to Control Microorganisms ...

Since Lister's time, several phenolic compounds have been used to control microbial growth. Phenolics like cresols (methylated phenols) and o-phenylphenol were active ingredients in various formulations …

Microbiology ch8 Flashcards - Flashcard Machine - Create ...

The disinfectant action of phenol and phenolic derivatives mainly is due to A. its inherent detergent action. B. membrane damage and protein denaturation. C. oxidation of disulfide bonds in proteins. D. extraction of lipids from membranes. E. damage to nucleic acids and proteins caused by free radicals.

Types of Sterilization Method Used in Microbiology

Sterilization is widely employed to destroy all forms of living microorganism in a substance. Sterilization method aims at preserving the substance for a long time. It involves the application of heat/chemical on the substance like drugs, food, surgical equipment, nutraceuticals etc. if food materials are not subjected to sterilization, chances are that it contains dangerous bacteria which can ...

(PDF) STERILISATION AND DISINFECTION - ResearchGate

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 full-text.

Inactivation of hepatitis viruses and HIV in plasma and ...

Inactivation of hepatitis viruses and HIV in plasma and plasma derivatives by treatment with beta-propiolactone/UV irradiation. Stephan W(1). Author information: (1)Biotest Pharma, Frankfurt/Main, FRG. A combined treatment of plasma or plasma derivatives by beta-propiolactone (beta-PL)/UV irradiation is in use at Biotest for the preparation of ...

Difference Between Sterilization and Pasteurization ...

Sterilization: Sterilization is applied in the medical surgery, microbiology, dentistry, packaging industry, food industry, etc. Pasteurization: Pasteurization is applied for the treatment of culture …

Sterilization Methods - ashland.k12.ky.us

Sterilization Methods Microbiology Biology II Mrs. Hieneman Terminology Sterilization – complete elimination of microbial viability Sterilant – chemical agent that sterilizes Disinfection – killing, inhibition or removal of disease-causing microbes.

Disinfectants and Sterilization Methods | Environmental ...

This Environmental Health & Safety guideline documentation is intended for researchers and laboratory personnel. General Description The purpose of this Guidance Document for Disinfectants and Sterilization Methods is to assist lab personnel in their decisions involving the judicious selection and proper use of specific disinfectants and ...

ISO 11135:2014(en), Sterilization of health-care products ...

The kinetics of inactivation of a pure culture of microorganisms by physical and/or chemical agents used to sterilize medical devices can generally best be described by an exponential relationship between the numbers of microorganisms surviving and the extent of treatment with the ethylene oxide (EO); inevitably this means that there is always a finite probability that a microorganism might ...

Pharmaceutical Microbiology

ANSI/AAMI/ISO-14160 - Sterilization of Health Care Products - Liquid Chemical Sterilizing Agents for Single-Use Medical Devices Utilizing Animal Tissues and Their Derivatives - Requirements for Characterization, Development, Validation and Routine Control of a Sterilization Process for Medical Devices (Ani/AAMI/ISO 14160:2011)

Chapter 8 Microbiology Quiz - ProProfs Quiz

Nov 05, 2018· Microbiology gives the learner a chance to study the biology of bacteria, viruses, protozoa and fungi. If one has a good understanding on this topic they will be able to have answers to some scientific questions on diseases. Do you believe you got a proper understanding of Chapter 8 on Microbiology? Take up the quiz below.

Chemical Methods of Sterilization and Disinfection ...

Aug 28, 2009· Ethylene oxide. This highly reactive gas (C2H4O) is flammable, toxic, and a strong mucosal irritant. Ethylene oxide can be used for sterilization at low temperatures (20–60 8C). The …

What is Sterilization ? 9 Types and Methods in Microbiology

Oct 13, 2019· Further, the sterilization time increases with a decrease in temperature and vice-versa. But one needs to maintain minimum sterilization time or minimum contact time for the heat to be in touch with microbes or bacteria and thereby kill them.. The heat method of sterilization is again of two types based on the type of heat used.

Chapter 7 Microbiology Vocabulary Flashcards | Quizlet

An organic compound containing a chlorine atom bonded to nitrogen, especially any of a group of sulfonamide derivatives used as antiseptics and disinfectants. Commercial Sterilization Commercial sterilization means that canned food is free of microorganisms that can reproduce under room temperature and pathogenic microorganism after undergoing ...

Ethylene oxide - Wikipedia

Ethylene oxide, called oxirane by IUPAC, is an organic compound with the formula C 2 H 4 O.It is a cyclic ether and the simplest epoxide: a three-membered ring consisting of one oxygen atom and two carbon atoms.Ethylene oxide is a colorless and flammable gas with a faintly sweet odor. Because it is a strained ring, ethylene oxide …

The International Pharmacopoeia Eighth Edition ...

Sterilization by filtration is employed mainly for thermolabile solutions. These may be sterilized by passage through sterile bacteria-retaining filters, e.g. membrane filters (cellulose derivatives, etc.), plastic, porous ceramic, or suitable sintered glass filters, or combinations of these. Asbestos-containing filters should not be used.

PPT – Plasma Sterilization PowerPoint presentation | free ...

Disinfection, sterilization, antibiotics - Sterilization (or sterilisation) refers to any process that eliminates, removes, kills, or deactivates all forms of life and other biological agents (such as fungi, …

Prescott's Principles of Microbiology_48 - 4 The killing ...

Prescott's Principles of Microbiology_48 - 4 The killing of vegetative forms of pathogenic microorganisms on inanimate objects is called A Disinfection ... The disinfectant action of phenol and phenolic derivatives mainly is due to Willey - Chapter 08 #5 6. ... Which kind of sterilization …

Microbiology Theory: Media Preparation | Sigma-Aldrich

Microorganisms need nutrients, a source of energy and certain environmental conditions in order to grow and reproduce. In the environment, microbes have adapted to the habitats most suitable for their …

Control of Microbial Growth | Sterilization (Microbiology ...

Chapter 7. The Control of Microbial Growth SLOs Define sterilization, disinfection, antisepsis, sanitization, biocide, germicide, bacteriostasis, and asepsis. Describe the microbial death curve. Describe the effects of microbial control agents on cellular structures.

Modes of action of disinfectants - Home: OIE

Chlorine and derivatives (1, 3, 6, 21, 22) Chlorine is electronegative, and therefore oxidises peptide links and denatures proteins. Hypochlorite and chloramine in water produce hypochloric acid, which then …

Chapter 7 Flashcards - flashcardmachine.com

A liquid chemical used for sterilization; small organic molecule that destroys bacterial cells within 10-30 min and spores in 10 hours → materials must be precleaned, then immersed for 10 hours, rinsed thoroughly with sterile water, dried in a special cabinet with sterile air and stored in a sterile container to ensure that the material ...

Difference Between Sterilization and Pasteurization ...

Sterilization: Sterilization is applied in the medical surgery, microbiology, dentistry, packaging industry, food industry, etc. Pasteurization: Pasteurization is applied for the treatment of culture mediums, medicines, etc. that include thermolabile ingredients such as sugars and proteins, as a food preservation method in the food industry, etc.

Sterilization and disinfection - LinkedIn SlideShare

Mar 10, 2015· Sterilization and disinfection 1. STERILIZATION AND DISINFECTION Dr.D.Arvind Prasanth 2. INTRODUCTION Sterilization A physical or chemical process that completely destroys or removes all microbial life, including spores. Disinfection It is killing or removing of harmful microorganisms Disinfectant Products used to kill microorganisms on inanimate objects or surfaces. Disinfectants are …

ISO - 11.080.01 - Sterilization and disinfection in general

Sterilization of health care products — Liquid chemical sterilizing agents for single-use medical devices utilizing animal tissues and their derivatives — Requirements for characterization, development, validation and routine control of a sterilization process for medical devices

Micro Chapter 8 Flashcards | Quizlet

44. The disinfectant action of phenol and phenolic derivatives mainly is due to A. its inherent detergent action. B. membrane damage and protein denaturation. C. oxidation of disulfide bonds in proteins. D. extraction of lipids from membranes. E. damage to nucleic acids and proteins caused by free radicals.

ISO - 11.080.01 - Sterilization and disinfection in general

Sterilization of health care products — Liquid chemical sterilizing agents for single-use medical devices utilizing animal tissues and their derivatives — Requirements for characterization, development, validation and routine control of a sterilization …

PPT – Sterilization Methods PowerPoint presentation | free ...

Disinfection, sterilization, antibiotics - Sterilization (or sterilisation) refers to any process that eliminates, removes, kills, or deactivates all forms of life and other biological agents (such as fungi, bacteria, viruses, spore forms, prions, unicellular eukaryotic organisms such as Plasmodium, etc.) present in a specified region, such as a surface, a volume of fluid, medication, or in a ...