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Preserves

preserve

(Science: ecology) An area in which organisms are protected (i.e., a nature preserve or an agricultural preserve).


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What is the positive control and negative control?

Just what benefit or criterion are you evaluating? As they establish the pH that preserves the product - why would you consider lactic acid bacteria per se "spoilage " bacteria? As you say, laxctic acid bacteria do not grow and slowly die off at pH around ...

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by JorgeLobo
Tue Feb 28, 2012 1:48 am
 
Forum: Microbiology
Topic: What is the positive control and negative control?
Replies: 9
Views: 3977

What is the positive control and negative control?

... The more lactic acid bacteria, the longer the shelf life. My hypothesis is that the higher the sugar yoghurt, the more lactic acid bacteria (preserves yoghurt). I have one yoghurt with high sugar content and another with low sugar. This will be my experiment. But I'm a little confused as ...

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by ilovebiology77
Sun Feb 26, 2012 3:44 pm
 
Forum: Microbiology
Topic: What is the positive control and negative control?
Replies: 9
Views: 3977

Re: Theories - Origin of Life

... make their appearance in the early Cambrian of Chengjiang, Yunnan Province in China.. The Mid Cambrian Burgess Shale fauna from British Columbia, preserves many soft-bodied fossils similar to those of the Chengjiang fauna. This indicates that these forms were widespread and persisted for many ...

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by scottie
Mon Nov 14, 2011 6:47 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 560
Views: 893861

Re: Theories - Origin of Life

... causes, create the potential to make new genes. These mutations may create new information or alter existing information. In either case nature preserves the beneficial mutations ( i.e. the knowledge to modify or make new proteins) by the process of natural selection, while the other mutations ...

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by scottie
Thu Aug 25, 2011 12:51 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 560
Views: 893861

Re: sterilization in microwave oven

I've sterilized jars for home preserves by sealing them with a damp piece of cheesecloth inside. Not a foolproof method, maybe, but there is increased pressured in the jar when steam forms. In any case, the chutney didn't spoil :D

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by Davy
Wed Jul 21, 2010 5:48 pm
 
Forum: Microbiology
Topic: sterilization in microwave oven
Replies: 29
Views: 100926
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