Preparation and Storage of Culture Media- explain the reason why washing powder manufacturers have produced proteases which can work at temperatures higher than 40 c ,Blood used for the preparation of blood agar should be as fresh as possible and should have been stored at 2-8°C (blood must not be frozen). Warm the blood in a 35°C incubator before addition to sterile molten agar base, which has been cooled to 40-45°C. Adequate mixing in a large head-space vessel is essential to ensure aeration of the blood.Bacterial Endotoxins/Pyrogens | FDAStudies by Tsuji et al, published in 1978, have shown that at lower temperatures (of 170 C), thermal destruction follows second-order rate, and a 3 log reduction of endotoxin levels at lower ...



The Dairy Industry: Process, Monitoring, Standards, and ...

Sampling and analysis occur along the milk processing train: from collection at farm level, to intake at the diary plant, the processing steps, and the end products. Milk has a short shelf life; however, products such as milk powders have allowed a global industry to be developed. Quality control tests are vital to support activities for hygiene and food standards to meet regulatory and ...

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Biology - Chapter 3 - Enzymes Flashcards | Quizlet

5) Proteases are used in biological washing powders. a) How would a protease remove a blood stain on clothes? b) Most biological washing powders are recommended for use at low washing temperatures. Why is this? c) Washing powder manufacturers have produced proteases which can work at higher temperatures than 40 C. Why is this useful?

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Powell Frequently Asked Questions about Sodium Hypochlorite

The old tables will typically show 120 gpl available chlorine bleach with 0.73 % by weight excess caustic which results in a specific gravity of 1.168 at 20 degrees C. Typically, the sodium hypochlorite produced by a continuous process will have approximately 0.2% by weight excess sodium hydroxide and this would result in a specific gravity of ...

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WHEY PROCESSING | Dairy Processing Handbook

Whey, the liquid residue of cheese, casein and yoghurt production, is one of the biggest reservoirs of food protein available today. World whey output at approximately 180 million tonnes in 2013 contains some 1.5 million tonnes of increasingly high-value protein and 8.6 million tonnes of lactose, a very important source of carbohydrate for the world.

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Chemistry in Surfactants, Home & Personal Care Products ...

Jul 14, 2013·Whatever the type of stain, after its enzymatic breakdown, surfactants suspend the resulting fragments in solution. Most enzymes are destroyed by high temperatures, i.e. above 60 °C. They are usually most effective at warm water temperatures (e.g. 40 °C), however some enzymes are best for use in cold water.

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Washing machine - Wikipedia

A washing machine (laundry machine, clothes washer, or washer) is a home appliance used to wash laundry.The term is mostly applied to machines that use water as opposed to dry cleaning (which uses alternative cleaning fluids and is performed by specialist businesses) or ultrasonic cleaners.The user adds laundry detergent, which is sold in liquid or powder form, to the wash water.

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Enzymes in Biological Detergents: The Facts - Persil

What Are Enzymes in Biological Washing Powder? Most biological laundry detergents contain lipase and protease enzymes, both of which are found in the body. Lipases break down fats and oils, while proteases work to break down protein chains. Their ability to break down these compounds makes them excellent for stain removal.

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Detergent Properties and Applications | Sigma-Aldrich

The resulting two-phase solution can be separated, with the extracted protein being located in the detergent-rich phase. Detergents with low cloud point temperatures, such as TRITON ® X-114 (cloud point ~23 °C) are recommended for use with proteins since high cloud point temperatures may denature solubilized proteins. The cloud point can be ...

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Protein production - Wikipedia

Protein production is the biotechnological process of generating a specific protein.It is typically achieved by the manipulation of gene expression in an organism such that it expresses large amounts of a recombinant gene.This includes the transcription of the recombinant DNA to messenger RNA (), the translation of mRNA into polypeptide chains, which are ultimately folded into functional ...

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Laundry detergent - Wikipedia

Laundry detergent, or washing powder, is a type of detergent (cleaning agent) used for cleaning laundry.Laundry detergent is manufactured in powder and liquid form. While powdered and liquid detergents hold roughly equal share of the worldwide laundry detergent market in terms of value, powdered detergents are sold twice as much compared to liquids in terms of volume.

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The Effects of Temperature on Enzyme Activity and Biology ...

However, some enzymes work really well at lower temperatures like 39 degree Fahrenheit, 4 degrees Celsius, and some work really well at higher temperatures. For instance, animals from the Arctic have enzymes adapted to have lower optimum temperatures while animals in desert climates have enzymes adapted to higher temperatures.

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α-Amylase Production and Applications: A Review

The optimum temperatures for growth and α-Amylase production were found to be 45°C to 46 °C and 50 °C, respectively. In B. subtilis 29 the optimum temperature for growth (42°C) was higher by 5°C than that of amylase formation (37°C) . Thermophilic archaeal α-Amylases are active and grow at high temperatures.

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Biology exam Q's additional Flashcards | Quizlet

Explain why the manufacturer carried out the investigation at 40 degrees. It takes longer at lower temperatures. 40 degrees is the optimum temperature. Enzymes are denatured at higher temperatures than 40 degrees.

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N95 Respirators and Surgical Masks | | Blogs | CDC

Oct 14, 20·Some manufacturers have added antimicrobial coatings to their filtering facepiece respirators to address the possibility of the respirator filter becoming a fomite for transmission of infection. Antimicrobial coatings on N95 filters are intended to kill or inactivate the germs, viruses, or other biological agents for the prevention of disease.

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Biology AQA GCSE UNIT 2 and UNIT 3 Flashcards | Quizlet

There are enzymes in biological washing powders. Biological washing powder has to be used at temperatures below 45 ºC. The enzymes in biological washing powders do not work on the stains on clothes at temperatures above 45 ºC. Explain why.

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(PDF) Applications of Major Enzymes in Food Industry

Milk was stored at five constant temperatures (2, 5, 7, 12 and 15 °C) and both total and psychrotrophic microbial counts were used to obtain the lag time and the growth rate values.

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WHEY PROCESSING | Dairy Processing Handbook

Whey, the liquid residue of cheese, casein and yoghurt production, is one of the biggest reservoirs of food protein available today. World whey output at approximately 180 million tonnes in 2013 contains some 1.5 million tonnes of increasingly high-value protein and 8.6 million tonnes of lactose, a very important source of carbohydrate for the world.

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(PDF) Yogurt: The Product and its Manufacture

The sample with 15% inulin content presented an approx. 4% higher pH value (4.34), 3-fold greater MVI and almost 5-fold higher penetration force, compared to the control sample (0% of inulin).

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Detergents for Cell Lysis and Protein Extraction | Thermo ...

Detergents are amphipathic molecules, meaning they contain both a nonpolar "tail" having aliphatic or aromatic character and a polar "head". Ionic character of the polar head group forms the basis for broad classification of detergents; they may be ionic (charged, either anionic or cationic), nonionic (uncharged), or zwitterionic (having both positively and negatively charged groups but with a ...

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Difference between Detergent and Washing Powder ...

The washing powder is generally cheaper than liquid detergents. The washing powder can come in cardboard packaging, thus is regarded more suitable for the environment, whereas the liquid detergent cannot be packaged in cardboard directly. The liquid detergents can be used to treat the stains before washing the clothes, as the liquid can ...

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(PDF) Solubility of egg white proteins: Effect of pH and ...

The protein solubility was determined experimentally for temperatures in the range of 40-60 C, including the pH dependence in the range from 6,0 to 9,0 for the egg white and from 3,5 to 7,8 for ...

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5. Proteins & Enzymes - National 5 Biology

This is why cells must produce many different enzyme molecules, from the DNA code, for all the different chemical reactions which are catalysed in cells. Notice by the way in the diagram that enzyme molecule remains unchanged as a result of the reaction - remember this is a key feature of a catalyst along with speeding up the reaction.

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Basic Laboratory Glassware and Equipment - American ...

Used for holding chemicals during heating to very high temperatures. Crucible Tongs. Used to hold crucibles. Erlenmeyer Flask. Used to hold and mix chemicals. The small neck is to facilitate mixing without spilling. Evaporating Dish. Used to heat liquids for evaporation. Forceps.

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Detergent Properties and Applications | Sigma-Aldrich

The resulting two-phase solution can be separated, with the extracted protein being located in the detergent-rich phase. Detergents with low cloud point temperatures, such as TRITON ® X-114 (cloud point ~23 °C) are recommended for use with proteins since high cloud point temperatures may denature solubilized proteins. The cloud point can be ...

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