3.5. CIE colour values, chlorophyll and carotenoids
Chillies undergo profound changes during the course of
senescence during postharvest storage showing conversion
of existing pigments. The green colour of the fruit is principally
due to the presence of chlorophyll and during maturation and
senescence, the chloroplast pigments disappear, while exclusively
carotenoid chromoplast pigments are synthesized and
esterified by fatty acids (Howard, Talcott, Brenes, & Villalon,
2000; Hortensteiner, 2006). A significant ( p < 0.05) difference in
colour values were observed in the chillies packed in different
films during storage. The L* value increased for both the
modified atmosphere packed and unpacked samples with
progress in senescence during storage. The control samples
showed change in colour after 15 days of storage while the
chillies packed in anti-fog (RD45) film maintained pigment
stability up to 28 days of storage owing to its optimum OTR
(oxygen transmission rate) and CTR (CO2 transmission rate)
which generated optimum modified atmosphere in the
packets lowering the respiration rates of the chillies (Table 2).
3.5. CIE colour values, chlorophyll and carotenoidsChillies undergo profound changes during the course ofsenescence during postharvest storage showing conversionof existing pigments. The green colour of the fruit is principallydue to the presence of chlorophyll and during maturation andsenescence, the chloroplast pigments disappear, while exclusivelycarotenoid chromoplast pigments are synthesized andesterified by fatty acids (Howard, Talcott, Brenes, & Villalon,2000; Hortensteiner, 2006). A significant ( p < 0.05) difference incolour values were observed in the chillies packed in differentfilms during storage. The L* value increased for both themodified atmosphere packed and unpacked samples withprogress in senescence during storage. The control samplesshowed change in colour after 15 days of storage while thechillies packed in anti-fog (RD45) film maintained pigmentstability up to 28 days of storage owing to its optimum OTR(oxygen transmission rate) and CTR (CO2 transmission rate)which generated optimum modified atmosphere in thepackets lowering the respiration rates of the chillies (Table 2).
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