Are there reference values for Head Rice Yield, whitness value, and Length Width Ratio that define premium quality milled rice?

31 October 2017 1 2K Report

Are there normalized standard values in the world market or in rice science that clearly distinguish premium quality rice from inferior quality rice? Or, is quality appreciation totally judgemental?

Nilay Borah

The information in the following links may be seen for quick reference:

http://www.fao.org/docrep/x5048e/x5048E03.htm

http://www.fao.org/docrep/x5048e/x5048E02.htm

http://www.knowledgebank.irri.org/training/fact-sheets/postharvest-management/rice-quality-fact-sheet-category/item/measuring-white-rice-quality-fact-sheet

The following link may be seen for more detailed information:

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjYpKCEiZvXAhUHSY8KHbnYAJEQFggrMAE&url=http%3A%2F%2Fwww.knowledgebank.irri.org%2Fpostproductioncourse%2Fimages%2Fmodules%2FReferences%2FModule%25206%2FRice%2520Quality%2520Reference%2520Manual.doc&usg=AOvVaw2sWTUV_kv_m21IWVwDvdm-

Regarding whiteness of the milled rice the consumer preference is an important factor deciding the milled rice quality and price. The following are few of the articles relevant to the aspect:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4794204/pdf/pone.0150345.pdf

http://onlinelibrary.wiley.com/doi/10.1111/j.1745-4603.1981.tb01225.x/abstract

http://pubmedcentralcanada.ca/pmcc/articles/PMC3769789/pdf/nihms439631.pdf

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