Abstract
In order to research the changes of phenolic compounds and antioxidant activites of litchi fruit during high temperature heat pump drying(HTHPD) processing,the content,composition and antioxidant activities of phenolic compounds of litchi pulp at different period were investigated.Results indicated that the contents of free and bound phenolic compounds and its ORAC antioxidant activities significantly decreased after HTHPD processing(P 0.01).Free phenolic compounds contributed greatly to total antioxidant activity.There was a direct relationship between free and bound phenolics contents and antioxidant activities in phytochemical extracts of litchi pulp.The higher phenolic contents in fruits resulted in higher antioxidant activity.The contents of free phenolic of gallic acid,vanillic acid,caffeic acid,(-)-Epicatechin and rutin significantly increased(P 0.05),(+)-Catechin and tetramethyl catechol significantly decreased(P 0.05).While the contents of bound phenolic of gallic acid,(+)-Catechin,caffeic acid and(-)-Epicatechin significantly increased(P0.05),rutin significantly decreased(P0.05).
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Claims 11
Claim · model-written summary
Drying decreased free and bound phenolic content.
- Organ / stage
- pulpe1
- Treatment
- HTHPD processinge0
- Outcome
- contents of free and bound phenolic compoundse0
- Direction
- decreasede0
LitchiNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of free and bound phenolic compounds and its ORAC antioxidant activities significantly decreased after HTHPD processing(P 0.01)”
t0“Litchi”
e1“of litchi pulp at different period”
Claim · model-written summary
Drying decreased ORAC antioxidant activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of free and bound phenolic compounds and its ORAC antioxidant activities significantly decreased after HTHPD processing(P 0.01)”
t0“Litchi”
Claim · model-written summary
Free phenolics contributed greatly to total antioxidant activity.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Free phenolic compounds contributed greatly to total antioxidant activity.”
t0“Litchi”
Claim · model-written summary
Free and bound phenolics related directly to antioxidant activity.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a direct relationship between free and bound phenolics contents and antioxidant activities in phytochemical extracts of litchi pulp.”
t0“Litchi”
Claim · model-written summary
Higher fruit phenolics coincided with higher antioxidant activity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher phenolic contents in fruits resulted in higher antioxidant activity.”
t0“Litchi”
Claim · model-written summary
Free gallic, vanillic and caffeic acids increased.
- Treatment
- high temperature heat pump drying(HTHPD) processinge1
- Outcome
- contents of free phenolic of gallic acid,vanillic acid,caffeic acide0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The contents of free phenolic of gallic acid,vanillic acid,caffeic acid,(-)-Epicatechin and rutin significantly increased(P 0.05)”
e1“during high temperature heat pump drying(HTHPD) processing”
t0“Litchi”
Claim · model-written summary
Free epicatechin and rutin increased.
- Treatment
- high temperature heat pump drying(HTHPD) processinge1
- Outcome
- (-)-Epicatechin and rutine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The contents of free phenolic of gallic acid,vanillic acid,caffeic acid,(-)-Epicatechin and rutin significantly increased(P 0.05)”
e1“during high temperature heat pump drying(HTHPD) processing”
t0“Litchi”
Claim · model-written summary
Free catechin and tetramethyl catechol decreased.
- Treatment
- high temperature heat pump drying(HTHPD) processinge1
- Outcome
- (+)-Catechin and tetramethyl catechole0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“(+)-Catechin and tetramethyl catechol significantly decreased(P 0.05)”
e1“during high temperature heat pump drying(HTHPD) processing”
t0“Litchi”
Claim · model-written summary
Bound gallic acid, catechin and caffeic acid increased.
- Treatment
- high temperature heat pump drying(HTHPD) processinge1
- Outcome
- bound phenolic of gallic acid,(+)-Catechin,caffeic acide0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of bound phenolic of gallic acid,(+)-Catechin,caffeic acid and(-)-Epicatechin significantly increased(P0.05)”
e1“during high temperature heat pump drying(HTHPD) processing”
t0“Litchi”
Claim · model-written summary
Bound epicatechin increased.
- Treatment
- high temperature heat pump drying(HTHPD) processinge1
- Outcome
- (-)-Epicatechine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of bound phenolic of gallic acid,(+)-Catechin,caffeic acid and(-)-Epicatechin significantly increased(P0.05)”
e1“during high temperature heat pump drying(HTHPD) processing”
t0“Litchi”
Claim · model-written summary
Bound rutin decreased.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rutin significantly decreased(P0.05)”
e1“during high temperature heat pump drying(HTHPD) processing”
t0“Litchi”
The same questions in other papers
processing · molecular: metabolites · LitchiPositive and negative results
1 in the opposite direction
- positive
heat · molecular: metabolites · LitchiPositive and negative results
1 in the opposite direction
- positive
processing · quality: phytochemicals · LitchiPositive and negative results
2 in the opposite direction
- positive
- positive
heat · quality: phytochemicals · LitchiPositive and negative results
3 in the opposite direction
- positive
- positive
- positive
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.