Abstract
This work aimed at an investigation of the profile of free phenolic compounds (PC) of Spirulina platensis and assesses their antioxidant potential, applying them as a natural conservative in minimally processed apples. The phenolic extract showed 396 µg g-1 gallic acid, 347 µg g-1 of caffeic acid, 54 µg g-1 salicylic acid and 3.5 µg g-1 trans-1-cinmamic a total of 608 µg PC g-1 of S. platensis. With the use of PC, it was possible to inhibit the radical DPPH over 180 min with IC50 of PC 202 μg mL-1. The inhibition of polyphenol oxidase and peroxidase of PC were 19.9 and 9.7%. In addition, verifying the constants Km and Vmax, it was concluded that inhibition of the peroxidase and polyphenol occurs in an uncompetitive manner. Application of crude extract of PC under minimally processed apples showed inhibition of browning by 40%. The general acceptance of apples was not affected by the addition of PC. Key words: Apple, enzymatic browning, peroxidase, phenols, polyphenol oxidase.
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Claims 2
Claim · model-written summary
Applying the crude phenolic extract to minimally processed apples inhibited browning by 40%.
- Taxon
- apples
Malus domesticae1 - Treatment
- Application of crude extract of PCe1
- Outcome
- browninge1
- Direction
- inhibitione1
- Value
- 40%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Application of crude extract of PC under minimally processed apples showed inhibition of browning by 40%”
Claim · model-written summary
General acceptance of the apples was not affected by the addition of the phenolic extract.
- Taxon
- applesMalus domesticae1
- Treatment
- addition of PCe1
- Outcome
- general acceptancee1
- Direction
- not affectede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The general acceptance of apples was not affected by the addition of PC”
The same questions in other papers
botanical · disease · Malus domestica (apple)Positive and negative results
35 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
35 papers more in this group
See all 39 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.