Abstract
Pumpkin peel is a by-product which may contain some bioactive compounds. It should be of interest to investigate the efficacy of pumpkin peel to control postharvest disease. Anthracnose disease caused by Colletotrichum musae is a major postharvest disease and causes loss of banana in Thailand. The aims of this research were to investigate antioxidant activity and bioactive compounds in pumpkin peel and to investigate the antifungal activity of pumpkin peel crude extract against anthracnose in banana. Pumpkin peel (Cucurbita spp.) was extracted with three different solvents: methanol, ethanol and acetone in ratio of pumpkin peel to solvent at 1:5 (w/v). Methanol was the best solvent for extraction, showing the significant higher (P ≤ 0.05) values of DPPH (19.57 µmol TE / 100 g DW), FRAP (64.88 µmol Fe(ll) / 100 g DW) and total phenolic content (92.25 mg GAE / 100 g DW), when compared with ethanol and acetone. Methanol at the concentrations of 95%, 70% and 50% were then used for extraction in a subsequent trial. The result showed that 50% methanol gave a significant higher (P ≤ 0.05) yield, DPPH (40.73 µmol TE / 100 g DW), FRAP (97.15 µmol Fe(ll) / 100 g DW) and phenolic compound (202.43 mg GAE / 100 g DW) when compared with 95% and 70% methanol. The 50% methanol pumpkin peel crude extract was then diluted to 95%, 70% and 50% for antifungal assays, both in vitro and in vivo. The methanol pumpkin peel extract at all concentrations significantly delayed (P ≤ 0.05) radial growth of C. musae during incubation for 6 days in comparison with the control (dimethyl sulfoxide: DMSO). There was no significant difference between methanol pumpkin peel extracts and control (DMSO) in rot lesion development on banana during storage for 5 days. Although, pumpkin peel extract did not control banana anthracnose, it might be used in combination with fungicide. And hence, the use of chemical would possibly be reduced.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Methanol extraction gave higher DPPH activity than ethanol and acetone, at 19.57 µmol TE / 100 g DW.
Verbatim
e0“Methanol was the best solvent for extraction, showing the significant higher (P ≤ 0.05) values of DPPH (19.57 µmol TE / 100 g DW), FRAP (64.88 µmol Fe(ll) / 100 g DW) and total phenolic content (92.25 mg GAE / 100 g DW), when compared with ethanol and acetone”
t0“Pumpkin”
Claim · model-written summary
Methanol extraction gave higher FRAP activity, at 64.88 µmol Fe(ll) / 100 g DW.
Verbatim
e0“Methanol was the best solvent for extraction, showing the significant higher (P ≤ 0.05) values of DPPH (19.57 µmol TE / 100 g DW), FRAP (64.88 µmol Fe(ll) / 100 g DW) and total phenolic content (92.25 mg GAE / 100 g DW), when compared with ethanol and acetone”
t0“Pumpkin”
Claim · model-written summary
Methanol extraction gave higher total phenolic content, at 92.25 mg GAE / 100 g DW.
Verbatim
e0“Methanol was the best solvent for extraction, showing the significant higher (P ≤ 0.05) values of DPPH (19.57 µmol TE / 100 g DW), FRAP (64.88 µmol Fe(ll) / 100 g DW) and total phenolic content (92.25 mg GAE / 100 g DW), when compared with ethanol and acetone”
t0“Pumpkin”
Claim · model-written summary
50% methanol gave significantly higher extraction yield than 95% and 70%.
Verbatim
e0“50% methanol gave a significant higher (P ≤ 0.05) yield, DPPH (40.73 µmol TE / 100 g DW), FRAP (97.15 µmol Fe(ll) / 100 g DW) and phenolic compound (202.43 mg GAE / 100 g DW) when compared with 95% and 70% methanol”
t0“Pumpkin”
Claim · model-written summary
50% methanol gave higher DPPH activity, at 40.73 µmol TE / 100 g DW.
Verbatim
e0“50% methanol gave a significant higher (P ≤ 0.05) yield, DPPH (40.73 µmol TE / 100 g DW), FRAP (97.15 µmol Fe(ll) / 100 g DW) and phenolic compound (202.43 mg GAE / 100 g DW) when compared with 95% and 70% methanol”
t0“Pumpkin”
Claim · model-written summary
50% methanol gave higher FRAP activity, at 97.15 µmol Fe(ll) / 100 g DW.
Verbatim
e0“50% methanol gave a significant higher (P ≤ 0.05) yield, DPPH (40.73 µmol TE / 100 g DW), FRAP (97.15 µmol Fe(ll) / 100 g DW) and phenolic compound (202.43 mg GAE / 100 g DW) when compared with 95% and 70% methanol”
t0“Pumpkin”
Claim · model-written summary
50% methanol gave higher phenolic compound content, at 202.43 mg GAE / 100 g DW.
Verbatim
e0“50% methanol gave a significant higher (P ≤ 0.05) yield, DPPH (40.73 µmol TE / 100 g DW), FRAP (97.15 µmol Fe(ll) / 100 g DW) and phenolic compound (202.43 mg GAE / 100 g DW) when compared with 95% and 70% methanol”
t0“Pumpkin”
Claim · model-written summary
Pumpkin peel extract at all concentrations significantly delayed C. musae radial growth.
- Taxon
- Pumpkint0
- Treatment
- methanol pumpkin peel extract at all concentrationse0
- Interactor
- C. musae
-_Anthracnose_caused_by_Colletotrichum_musae.jpg?width=60)
Colletotrichum musaee0pathogen - Outcome
- radial growth of C. musaee0
- Direction
- delayede0
- Qualifier
- during incubation for 6 dayse0
- Comparator
- control (dimethyl sulfoxide: DMSO)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
-_Anthracnose_caused_by_Colletotrichum_musae.jpg?width=500)
Verbatim
e0“The methanol pumpkin peel extract at all concentrations significantly delayed (P ≤ 0.05) radial growth of C. musae during incubation for 6 days in comparison with the control (dimethyl sulfoxide: DMSO)”
t0“Pumpkin”
Claim · model-written summary
Pumpkin peel extract did not significantly alter banana rot lesions over five days.
Verbatim
e0“There was no significant difference between methanol pumpkin peel extracts and control (DMSO) in rot lesion development on banana during storage for 5 days”
Claim · model-written summary
The authors suggest combining pumpkin peel extract with fungicide.
Verbatim
e0“it might be used in combination with fungicide”
t0“Pumpkin”
Claim · model-written summary
The authors suggest such use might reduce chemical use.
Verbatim
e0“the use of chemical would possibly be reduced”
t0“Pumpkin”
The same questions in other papers
methanol · yield · Cucurbita (pumpkins)Results agree
1 paper in the same direction as this paper
- positive
botanical · disease · MusaPositive and negative results
2 papers in the same direction as this paper · 33 in the opposite direction
- positive
- positive
- positive
32 papers more in this group
See all 36 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.