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coagulation

03/19/2008 2:27 PM

hi...

i have a question. who can me explain in tofu production, what kind of effects has nigari and calciumsulphate. i will be pleasure when i receive an answer. thank you...

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#1

Re: coagulation

03/19/2008 4:24 PM

talip,

quick answer,

the amount you add effects the firmness of the tofu.

I have some information (not with me) that has whats going on in cheese making which is simuliar, that I'll email you, that goes into more detail.

hope you have patience, until then.

phoenix911

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#3
In reply to #1

Re: coagulation

03/21/2008 12:21 AM

thank you very much. i showed to my e mail but i didnt see anything. may be it comes later. thankk you very much.

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#7
In reply to #3

Re: coagulation

03/24/2008 1:52 PM

talip,

I had moved last fall, and just as recent am working in a different industry (environmental), I have (2) computers that have alot of info on it which is also in storage, I will see if I can "unpack" them tonight or tommorow night. (I need some of the items on my hard drive.)

The majority of my experience is in the dairy industry, over 20 years, designing process equipment. I should have what you are looking for.

sorry for the inconvenience,

phoenix911

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#2

Re: coagulation

03/19/2008 10:45 PM

They coagulate the proteins in the soy milk to form tofu. Nigari will form the softer Japanese style, while calcium sulphate forms the firmer Chinese style. Exactly how much you add in will affect the firmness of the final product.

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#4
In reply to #2

Re: coagulation

03/21/2008 12:23 AM

thank you very much

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#5
In reply to #2

Re: coagulation

03/21/2008 11:00 AM

DVader1000, your answer reminds me of the affect nanoclays have in polymers. Could you please give me some "hard numbers" like how much of a loading and its affect on the modulus of elasticity?

I do realize the absurdity of asking about the mechanical properties of a food. Its kind of like asking the shear rate of a pudding under a specified torsion; a bit strange but useful processing info.

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#6
In reply to #5

Re: coagulation

03/24/2008 12:20 PM

Ben Bonzens,

your answer reminds me of the affect nanoclays have in polymers.

excellent observation, this is usually used in grade school science experiments for such uses.

http://nobel.scas.bcit.ca/resource/plastic/plastic.htm

I do realize the absurdity of asking about the mechanical properties of a food. Its kind of like asking the shear rate of a pudding under a specified torsion; a bit strange but useful processing info.

on the contrary, rheology is a very important part in processing food stuffs like cheese.

And there are different types to apply shear, torsion, linear, telescopic, as from the my contact from scientists from at USDA Aphis in Alexandria Va shear basically is shear no matter how its applied. At least in cheese.

phoenix911

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#8
In reply to #5

Re: coagulation

03/24/2008 10:08 PM

I'm not a chemist unfortunately, so I can't answer your question. Usually, if you're trying to do it homemade, there'll be instructions for the set.

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