Spectral shift as advanced index for fruit chlorophyll breakdown
نویسندگان
چکیده
منابع مشابه
Chlorophyll breakdown in aquatic ecosystems.
T he annual cycle of greening and degreening of plants is probably the most obvious sign of life on Earth. It is caused by the biosynthesis of ∼10 tons of chlorophylls (Chls) in spring and their degradation in fall. The biochemistry of Chl breakdown to linear tetrapyrroles has been worked out in land plants (1), but little was known about the process in marine organisms, which contribute a comp...
متن کاملChlorophyll Breakdown in Senescent Leaves.
The biosynthetic pathway of Chl, probably the most important pigment in the biosphere, has been studied in considerable detail and is mentioned in plant physiology textbooks. Oddly enough, however, the breakdown of Chl is barely mentioned. Yet, as pointed out by Hendry et al. (1987), an estimated one billion tons of Chl are broken down every year, seemingly without leaving a trace. The only enz...
متن کاملStructures of Chlorophyll Catabolites in Bananas (Musa acuminata) Reveal a Split Path of Chlorophyll Breakdown in a Ripening Fruit
The disappearance of chlorophyll is a visual sign of fruit ripening. Yet, chlorophyll breakdown in fruit has hardly been explored; its non-green degradation products are largely unknown. Here we report the analysis and structure elucidation of colorless tetrapyrrolic chlorophyll breakdown products in commercially available, ripening bananas (Musa acuminata, Cavendish cultivar). In banana peels,...
متن کاملBreakdown of chlorophyll: a nonenzymatic reaction accounts for the formation of the colorless "nonfluorescent" chlorophyll catabolites.
Senescent higher plants degrade their chlorophylls (Chls) to polar colorless tetrapyrrolic Chl catabolites, which accumulate in the vacuoles. In extracts from degreened leaves of the tree Cercidiphyllum japonicum an unpolar catabolite of this type was discovered. This tetrapyrrole was named Cj-NCC-2 and was found to be identical with the product of a stereoselective nonenzymatic isomerization o...
متن کاملReflectance spectral features and non-destructive estimation of chlorophyll, carotenoid and anthocyanin content in apple fruit
Fruit reflectance spectra of five apple (Malus domestica Borkh.) cultivars (Zhigulevskoe, Antonovka, Granny Smith, Golden Delicious and Renet Simirenko) with a wide range of peel pigment (chlorophylls a and b , carotenoids and anthocyanins) content have been studied to develop non-destructive techniques for pigment assessment. In addition to chlorophylls, positions of in vivo absorption maxima ...
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ژورنال
عنوان ژورنال: Food and Bioprocess Technology
سال: 2013
ISSN: 1935-5130,1935-5149
DOI: 10.1007/s11947-013-1218-1