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Breakdown of Chlorophyll in Higher Plants—Phyllobilins as Abundant, Yet Hardly Visible Signs of Ripening, Senescence, and Cell Death
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no DOI — not checkedNCCs (and other Chl catabolites) were typically given convenient provisional names first with reference to the plant of their origin e.g. asHv-NCC when from barley (Hordeum vulgare) or asBn-NCC when from oilseed rape (Brassica napus).[19 22]NCCs were indexed according to their relative polarity (asBn-NCC-1 Bn-NCC-2 etc.) as determined by reversed-phase HPLC. This naming was frequently found inadequate and retention times (min) observed under the conditions of a standard HPLC protocol were later introduced as an index e.g.Sw-NCC-58 for an NCC with a standard retention time of 58 min fromSp. wallisii.[10 74]
no DOI — not checkedSee Section 1.2. for the now recommended semisystematic nomenclature of linear tetrapyrrolic Chl catabolites based on the structure of phyllobilanes (I).[10]
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no DOI — not checkedpreviously NCCs and other ring-opened Chl catabolites were named in another semisystematic structure-based way as derivatives of phytoporphyrin.[21]Thus 1was named a 31 32 82-trihydroxy-1 4 5 10 15 20-(22H 24H)-octahydro-132-[methoxycarbonyl]-4 5-dioxo-4 5-secophytoporphyrinate.[8a]
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no DOI — not checkedWe became interested in knowing what different test persons remember from their direct visual impression of freshly ripe bananas illuminated with 360 nm UV light in a dark room. A test with over 40 different test persons of various age groups was carried out at the University of Innsbruck. While a blue color was observed by all of them as recorded by the test persons immediately after leaving the dark room there is a significant spread from person to person of the actual intensity as well as of the hue of the blue color. Blue fluorescent rings around senescence-associated dark spots on the peel of overripe bananas can be observed (even more) easily in darkened rooms.
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