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Quality Control Parameters for Tetrapak Fruit Juice.


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#1 Sujit

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Posted 01 July 2011 - 04:53 AM

Dear Members,

Could someone guide me about the quality control parameters for Tetrapak fruit juice.

Best wishes
Sujit


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#2 GMO

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Posted 01 July 2011 - 04:03 PM

Not something I've worked in but I suspect Brix (sugar) and pH will be important.


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#3 Sujit

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Posted 02 July 2011 - 12:59 PM

Thanks GMO. Yes I also found brix, Ph, acidity.

Regards
Sujit


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#4 Mel Morris

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Posted 07 July 2011 - 12:44 PM

Dear Members,

Could someone guide me about the quality control parameters for Tetrapak fruit juice.

Best wishes
Sujit


In addition to the parameters quoted, I would add organoleptic qualities such as colour and flavour. I worked with Tetra pak juices in the 90s - and orange juice particularly gets dark and tastes poor after 6 months. Also, Vitamin C needs to be measured near the end of the shelf life to ensure it is still present in the stated quantities. Apple Juice had a much better shelf life - around 12 months IIRC. Pineapple like Orange was subject to darkening.
Hope that helps
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#5 agwanda

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Posted 09 July 2011 - 12:46 PM

Dear Sujit,

Assuming that you are doing commercial sterilization, other QA parameters of importance are online checks for pack integrity(dye test, tear test etc), batch codes, Expiry date codes as well as shelf life simulations through incubation(if UHT process is used). You should also evaluate indicative microbial load of the finished product to ensure sterility is achieved.

I hope this suffices.

agwanda


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#6 Sujit

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Posted 22 October 2011 - 02:39 PM

Thank you, GMO, Mel, Agwanda.
Regards,
Sujit


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#7 foodsafetyboy

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Posted 23 October 2011 - 10:01 AM

Dear Members,

Could someone guide me about the quality control parameters for Tetrapak fruit juice.

Best wishes
Sujit


Hi Sujith,

We are only analyzing for Brix, Acidity, pH, and specific gravity.

Microbiological wise we are testing for
>APC
>Total coliforms
>E coli
> yeast and moulds

regards, food safety boy
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#8 Sujit

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Posted 23 October 2011 - 03:07 PM

Food Safety boy,

How are you checking specific gravity ?. Can you give me some values for different juices.

Warm regards,
Sujit


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