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Lactose

Lactose

The major sugar in human and bovine milk. Conversion of lactose to lactic acid by Lactobacilli etc. Is important in the production of yoghurt and cheese. A sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk; cow's milk contains about 4.7% lactose.A disaccharide sugar which is commonly found in milk. It consists of galactose and glucose, where an enzyme called lactase can break lactose into these two smaller components. Microorganisms convert lactose to pyruvic acid, which results in the souring of the milk for example.


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Re: can galactose be convert into fructose?

Since I have yet to learn about phosphorylation, I can only answer your second question about 'the transformation of galactose to fructose' . If I'm not mistaken, no , galactose cannot be transformed/converted to fructose (a sugar found in fruits). This is because both the aforementioned ...

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by mande
Wed Aug 26, 2009 10:01 am
 
Forum: Molecular Biology
Topic: can galactose be convert into fructose?
Replies: 3
Views: 68

Needing help identifying uknowns for micro lab

Tests 7A 7B SIM black/pur negative Gram negative negative Rod 2x1 3 to 4x1 Motile non pos PR lactose pos negative PR glucose pos pos Litmus alkaline didn't test FTM facultative aerobic Catalase negative negative MR pos pos VP pos Starch negative hydrolysis Amylase negative ...

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by avon7774
Wed Jul 29, 2009 10:35 pm
 
Forum: Microbiology
Topic: Needing help identifying uknowns for micro lab
Replies: 1
Views: 99

unknown bacteria

... rod shaped bacteria that is motile and facultatively anaerobic. It performs well at 37 C I have + results for acid and gas with Glucose, Sucrose, Lactose, and maltose. I have a + for citrate utilization and catalase. Negative on gelatin hydrolysis, cysteine digestion, tryptophan digestion, and ...

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by 5646matthews
Thu Jul 16, 2009 10:38 pm
 
Forum: Microbiology
Topic: unknown bacteria
Replies: 1
Views: 147

Re: Stomach bloating and weight gain

... at the moment you are in-taking food, your wonder enzyme pill might just have a possibility of working, much like the pills used for those who are lactose intolerant. In general enzyme supplements are nothing more than snake oil, and I would love to see any FDA approved data that you have to refute ...

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by MichaelXY
Mon Jul 13, 2009 8:08 am
 
Forum: Physiology
Topic: Stomach bloating and weight gain
Replies: 299
Views: 483300

help identify unknow species

... aerobic MacConey : Gram-,Lac- motile (+) endospore(-) oxidase(+) catalase(-) H2S(-) reduction of nitrate and nitrite(-) glucose fermentation (-) lactose (-) sucrose(-) mannitol(-) MR(-) VP(-) starch hydrolysis (-) casein hydrolysis (-) indole (-) citrate (+) nitrate (+) urease (-) Any help is ...

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by 198839
Sat Jul 11, 2009 12:26 am
 
Forum: Microbiology
Topic: help identify unknow species
Replies: 2
Views: 154
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