Abstract
Chlorophylls and xanthophylls were monitored in broccoli ( Brassica oleracea L. var. italica Plen.) florets stored in air, air + 10 ppm ethylene, or 10% CO 2 + 1% O 2 controlled atmosphere (CA) at 15 °C. Chlorophylls a and b, as measured with high-performance liquid chromatography, decreased in florets held in air. The decrease was accelerated by ethylene treatment and suppressed in CA. Chlorophyllide a and pheophorbide a were present in fresh broccoli florets, but the levels decreased significantly in all treatments during storage. The oxidized product of chlorophyll a, 13 2 -hydroxychlorophyll a, did not accumulate. Xanthophylls decreased, but new pigments, suggested to be esterified xanthophylls, formed with yellowing in stored florets. The chlorophyll degradative pathway in broccoli florets was not altered by ethylene or CA and differed from that reported for parsley ( Petroselium crisum Nym.) and spinach ( Spinacia oleracea L.) leaves.
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Claims 10
Claim · model-written summary
Chlorophylls a and b decreased in florets stored in air.
- Taxon
- broccoli
Brassica oleracea var. italicat0 - Organ / stage
- floretse0
- Treatment
- aire0
- Outcome
- Chlorophylls a and be0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophylls a and b, as measured with high-performance liquid chromatography, decreased in florets held in air.”
t0“Broccoli”
Claim · model-written summary
Ethylene accelerated chlorophyll decline.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- ethylene treatmente0
- Outcome
- decreasee0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease was accelerated by ethylene treatment and suppressed in CA.”
t0“Broccoli”
Claim · model-written summary
Controlled atmosphere suppressed chlorophyll decline.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Treatment
- CAe0
- Outcome
- decreasee0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease was accelerated by ethylene treatment and suppressed in CA.”
t0“Broccoli”
Claim · model-written summary
Chlorophyllide a and pheophorbide a were present in fresh florets.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Organ / stage
- fresh broccoli floretse0
- Outcome
- Chlorophyllide a and pheophorbide a were presente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyllide a and pheophorbide a were present in fresh broccoli florets”
Claim · model-written summary
Chlorophyllide a and pheophorbide a levels decreased significantly in every storage treatment.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Outcome
- the levelse0
- Direction
- decreasede0
- Qualifier
- all treatments during storagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the levels decreased significantly in all treatments during storage.”
t0“Broccoli”
Claim · model-written summary
13 2 -hydroxychlorophyll a did not accumulate.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Outcome
- 13 2 -hydroxychlorophyll ae0
- Direction
- did not accumulatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The oxidized product of chlorophyll a, 13 2 -hydroxychlorophyll a, did not accumulate.”
t0“Broccoli”
Claim · model-written summary
Xanthophylls decreased in stored florets.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Organ / stage
- stored floretse0
- Outcome
- Xanthophyllse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xanthophylls decreased, but new pigments, suggested to be esterified xanthophylls, formed with yellowing in stored florets.”
t0“Broccoli”
Claim · model-written summary
New pigments, possibly esterified xanthophylls, formed with floret yellowing.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Organ / stage
- stored floretse0
- Outcome
- new pigments, suggested to be esterified xanthophylls, formede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new pigments, suggested to be esterified xanthophylls, formed with yellowing in stored florets.”
t0“Broccoli”
Claim · model-written summary
Ethylene and controlled atmosphere did not alter the broccoli chlorophyll degradation pathway.
- Taxon
- broccoliBrassica oleracea var. italicae0
- Treatment
- ethylene or CAe0
- Outcome
- chlorophyll degradative pathwaye0
- Direction
- not alterede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chlorophyll degradative pathway in broccoli florets was not altered by ethylene or CA”
Claim · model-written summary
The broccoli chlorophyll degradation pathway differed from those reported for parsley and spinach leaves.
- Taxon
- BroccoliBrassica oleracea var. italicat0
- Outcome
- chlorophyll degradative pathwaye1
- Comparator
- parsley ( Petroselium crisum Nym.) and spinach ( Spinacia oleracea L.) leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differed from that reported for parsley ( Petroselium crisum Nym.) and spinach ( Spinacia oleracea L.) leaves.”
t0“Broccoli”
e1“The chlorophyll degradative pathway in broccoli florets was not altered by ethylene or CA”
The same questions in other papers
storage · physiology: pigments · Brassica oleracea (wild cabbage)Positive and negative results
1 paper in the same direction as this paper · 22 in the opposite direction
- positive
- positive
- positive
20 papers more in this group
See all 24 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.