Quality Factors

Quality of vegetables may be evaluated in terms of sensorial, chemical composition, microbial population and nutritional composition.

The USDA- agricultural marketing service addresses issues related to vegetable quality in their website (http://www.ams.usda.gov/fv/) Their quality standards can be found at http://www.ams.usda.gov/standards/stanfrfv.htm

The University of California at Davis published "Methods for Determining Quality of Fresh Commodities," you may see it at:
http://postharvest.ucdavis.edu/pubs/PHQ_85_Methods_for.pdf