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Formation and Control of Chlorophyll and Glycoalkaloids in Tubers of Solanum tuberosum L. and Evaluation of Glycoalkaloid Toxicity*

1975; Academic Press; Linguagem: Inglês

10.1016/s0065-2628(08)60093-2

1875-6352

S. J. JADHAV, D. K. Salunkhe,

Cassava research and cyanide

This chapter deals with the formation and control of chlorophyll and glycoalkaloids in tubers of solanurn tuberosurn and the evaluation of glycoalkaloid toxicity. Several factors influence the rates of greening and glycoalkaloid formation. Outbreaks of glycoalkaloid poisoning, the toxicity and pharmacology of glycoalkaloids, and current views relating to potential health problems are discussed. A biosynthetic pathway to chlorophyll via glycine, succinyl–CoA, S–aminolevulinic acid, and porphyrins has been reviewed by Bogorad and Ellsworth. The probability that tubers will be exposed to a certain quantity and duration of light, singly or in certain combinations including daylight, sunshine, and ultraviolet, fluorescent, or incandescent light, varies with environmental factors and marketing conditions. Several physicochemical methods for the control of greening and of formation of glycoalkaloids have been discussed. In conclusion, there is a brief description about the methods used to control chlorophyll and glycoalkaloid formation. These include, genetics, packaging, colored lights and colored film filters, wax, oil, soap, and surfactant treatments, chemicals, controlled atmosphere storage, hypobaric storage, ionizing radiation. And also a brief explanation about pharmacology and toxicology of glycoalkaloids has been provided.