Post Harvest products are subject to an active metabolism. Numerous biochemical processes (postharvest physiology) are continuously changing the original composition of the crop up to where marketability is definitively lost. Postharvest is a field of Sciences which studies maintaining quality and preventing spoilage of horticultural crops. ... Metabolism (from Greek μεταβολισμός metabolismos) is the biochemical modification of chemical compounds in living organisms and cells. ... Postharvest physiology is a field which studies maintaining quality and preventing spoilage of horticultural crops. ... The composition of a material refers to the proportion and combination of elements or components to form a substance. ... Look up crop in Wiktionary, the free dictionary. ...

The first period comprising no drastic changes in composition may be defined as the time of postharvest products freshness.

Since freshness is considered to be organoleptic factor and important part of product quality, its evaluation should rest upon searching an objective methods. Up to now only sensory tests or mechanical and colorimetric, (optical) criteria for the freshness are used. It was tried to find out biochemical marker and fingerprint methods serves as a freshness index or freshness stage. Category: ... For the Talib Kweli album Quality (album) Quality can refer to a. ... Evaluation is the systematic determination of merit, worth, and significance of something or someone. ... sensory evaluation is ussually the evaluation of foods with the use of the human senses. ... See also list of optical topics. ... Marker may refer to: A felt-tipped marker pen. ... Peptide mass fingerprinting (PMF) is an analytical technique for protein identification that was developed by John Yates and colleagues (3). ... Look up Index in Wiktionary, the free dictionary. ...

The free amino acids during the freshness lost storage of green vegetable are studied followed by an examination of protease activities.

External links

• Paper on postharvest freshness