Hello Dear

Please find the following ARTICLE about the apple juice 

file:///C:/Users/mohammad/Downloads/52811-1-55175-1-10-20160330.pdf

Hi Dear

Greeting

you can see my article  I hope it useful for your question 

https://www.researchgate.net/profile/Alaa_Niamah/publication/255980073_Effect_of_chitosan_on_apple_juice_quality/links/0deec52137fb1b386b000000.pdf

Data Effect of chitosan on apple juice quality

good day,

there are standard methods of determining these parameters you have highlighted, kindly check FAO STANDARDS via the link http://www.fao.org/fileadmin/user_upload/agns/pdf/CXS_234e.pdf 

Hello Dear,

You can see the following Links. I hope it helps you.

https://www.google.com/patents/EP1232694B1

Hi Jackline, please see if this link hep you http://www.ifrj.upm.edu.my/afjv14(3)2007/205-214.pdf