Golden, Kerith D.; Williams, Opal J.; Dunkley, Hope M.
Author Affiliation, Ana.
Department of Basic Medical Sciences
The production of ethylene and ethylene oxide in some tropical fruits and the increased synthesis of these gases due to colbaltous sulphate
Jamaican Journal of Science and Technology
Date of Publication
The phytohormone ethylene is synthesized by plants from methionone which is converted firstly to S-adenosyl methionine (SAM), the to 1- amino cycloprppane-1-carboxylic acid (ACC) and finally to ethylene. This paper reports on the production of ethylene and etylene oxide by tropical fruits such as Carica papaya (papaya), Artocarpus altilis (breadfruit), and Manikara zapota (naseberry). The rate of respiration (of uptake) was investigated in these fruit and a correlation between ethylene production and the rate of respiration was made with the aim of characterizing the naseberry as either being climacteric or non-climacteric. The effect of Co on the production of ethylene is also reported. Colbaltous ions according to the literature is supposed to inhibit ethylene synthesis: however, the activation of ethylene synthesis by Co at concentrations ranging from 0.110 mM to 1.123 mM is reported. Potassium cyanide (13.092mM) inhibited ethylene synthesis but activated ethylene oxide synthesis. The inhibition of ethylene and ethylene oxide production by n-propyl gallate, suggests that both ethylene and ethylene oxide have a common precursor (ACC).....