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The first aspect I have chosen to investigate is the asexual reproduction of yeast within the brewing process. Yeast asexually reproduced during the sixth process of brewing. Asexual reproduction

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Introduction

Biology report Introduction The main purpose of this report is to identify two aspects of biology with are closely linked with the brewing industry and chose one to explain in detail. The audience to which this report is targeted at is A level students who have a good understanding of biology. The first aspect I have chosen to investigate is the asexual reproduction of yeast within the brewing process. Yeast asexually reproduced during the sixth process of brewing. Asexual reproduction is very important within the brewing industry. Without it yeast could not reproduce with an identical genetic make up and without the identical genetic make up brewers could not control the taste of the quality of their beer. With asexual reproduction brewers can genetically modify the yeasts in search of a new/better taste and then reproduce them to the trillions needed without variation occurring. [3, 4, 5] The second and major characteristic of the brewing process I have chosen is the fermentation of yeast, Saccharomyes ceivevisia in particular, within the brewing business to release ethanol. Fermentation is the anaerobic conversion of sugar to carbon dioxide and ethanol by yeast, this is another important process because without fermentation breweries could not exist as they would have no product to sell. I chose these topics after my visit to bass brewery in Stoke on Trent where I found some of my information. ...read more.

Middle

Instead they collect the gas and convert it into liquid for the use of making drinks fizzy. This is also economically efficient for the brewery as they can use the carbon dioxide they collect to make their own beer fizzy without having to pay for it. [2, 4] Social issues = the main products of the brewing process are beers, spirits, and wines. Alcoholic drinks are harmful when consumed in excess. Excess alcohol can alter judgment and can lead to dependency and other health related problems. "Taking more than one drink per a day for women or two drinks per a day for a man can raise the risk of breast cancer, motor vehicle crashes, high blood pressure, a stroke, and violence" etc. "Alcohol consumption during pregnancy increases the risk of birth defects." One could say that these reasons alone are enough evidence to claim that the process of fermentation shouldn't take place. [1] Ethical = as yeast is a living organism some might say that allowing yeast to die after it has completed its task is unethical. However I do not agree with this as yeast is a single celled organism and is therefore not complex enough to feel pain. Fermentation vessels The biology behind the fermentation process The process of malting releases enzymes such as alpha amylase from the germination of barley seeds which breaks down the starch to sugars for fermentation in the mashing process. ...read more.

Conclusion

[4, 5] . Future developments One future development that the scientists who work at the Coors brewery are working on is the huge amount of space it takes to grow the barley needed to produce the glucose, and the pesticides sprayed on the land to make them grow. One was they are trying to overcome these problems is obtaining glucose from cellulose instead of starch. Cellulose can be obtained from other industries waste products e.g. sawdust and straw. The implication for the world of this development would be less production of waste as using other businesses waste products would be environmentally friendly and economically advantageous as well as also not using pesticides on the land which can cause havoc to natures balance. However this could drive the cost of alcohol down which could lead to an even bigger binge culture in Britain. [4] Another future development of fermentation involves scientists in America trying to produce yeast which will allow glucose to break down faster into the ethanol wanted. This means more ethanol can be produced in a smaller amount of time. This means a brewery can produce more alcohol without investing more money in new machinery. The implications of this could have serious affects on the world. If more alcohol can be produced more quickly, this would cut the price of alcohol. People would drink more and would most certainly lead to more health problems within Britain. This inevitably would lead to major health problems and a crisis within the NHS. ...read more.

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