Abstract
Locally obtained chillies, var. Guntur, were dried at 60 degree C for 2 h before being destalked or ground. Samples of ground or whole chillies were packed into pouches made of paper, low or high density polyethylene, saran/cellophane/polyethylene laminate or Al foil laminate and stored at 27 degree C, 65% RH or 38 degree C, 90% RH, or directly exposed to sunlight for 5-6 h/day for 90 days. Initial moisture content was 5.5%. Samples were also exposed to 27 degree , 38 degree C or direct sunlight for 90 days in air-tight glass bottles, having a range of moisture contents 4.5-11.5% for powder and 6.1-12.5% for whole chilli. Colour in these materials was determined as optical density of a benzene extract at 496 nm. A sorption isotherm was plotted for whole and ground chilli by equilibriation at 27 degree C with RH in the range 11-86%. The isotherms were very similar for both products, sigmoid in shape and showing a steep rise in moisture content at greater than 55% RH; mould growth observed at greater than 75% RH. Higher moisture content and temp. promoted colour loss, as did sunlight, by bleaching the carotenoid pigments. Moisture pick-up through the flexible packages correlated well with vapour transmission rates. Colour loss was greater at higher temp., but reduced in the Al foil and coloured polyethylene packs. Whole chillies at the higher temp. were discoloured due to non-enzymatic browning, but retained their colour at the lower temp. even in kraft paper packs.
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Claims 12
Claim · model-written summary
Whole and ground chilli sorption isotherms were very similar and sigmoid.
- Taxon
- chillies (Capsicum annuum)
Capsicum annuumt0 - Outcome
- isothermse0
- Comparator
- both productse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The isotherms were very similar for both products, sigmoid in shape”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Chilli moisture content rose steeply above 55% relative humidity.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Outcome
- moisture contente0
- Direction
- steep risee0
- Setting
- greater than 55% RHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“showing a steep rise in moisture content at greater than 55% RH”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Mould growth was observed above 75% relative humidity.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Outcome
- mould growthe0
- Setting
- greater than 75% RHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mould growth observed at greater than 75% RH”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Higher moisture content promoted colour loss in dried chillies.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Outcome
- colour losse0
- Direction
- promotede0
- Setting
- Higher moisture contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher moisture content and temp. promoted colour loss”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Higher temperature promoted colour loss in dried chillies.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Outcome
- colour losse0
- Direction
- promotede0
- Setting
- temp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher moisture content and temp. promoted colour loss”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Sunlight promoted colour loss by bleaching carotenoid pigments.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Treatment
- sunlighte0
- Outcome
- colour losse1
- Direction
- promotede1
- Qualifier
- bleaching the carotenoid pigmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as did sunlight, by bleaching the carotenoid pigments”
e1“Higher moisture content and temp. promoted colour loss”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Moisture uptake through flexible packages correlated with vapour transmission rates.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Treatment
- flexible packagese0
- Outcome
- Moisture pick-upe0
- Qualifier
- vapour transmission ratese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moisture pick-up through the flexible packages correlated well with vapour transmission rates.”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Higher temperature increased colour loss in stored chillies.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Outcome
- Colour losse0
- Direction
- greatere0
- Setting
- higher temp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Colour loss was greater at higher temp.”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Al foil packaging reduced colour loss in stored chillies.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Treatment
- Al foile0
- Outcome
- Colour losse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Colour loss was greater at higher temp., but reduced in the Al foil and coloured polyethylene packs.”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Coloured polyethylene packaging reduced colour loss in stored chillies.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Treatment
- coloured polyethylene packse0
- Outcome
- Colour losse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Colour loss was greater at higher temp., but reduced in the Al foil and coloured polyethylene packs.”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Whole chillies discoloured at higher temperature due to non-enzymatic browning.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Outcome
- discolourede0
- Qualifier
- non-enzymatic browninge0
- Setting
- higher temp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whole chillies at the higher temp. were discoloured due to non-enzymatic browning”
t0“chillies (Capsicum annuum)”
Claim · model-written summary
Whole chillies retained colour at lower temperature even in kraft paper packs.
- Taxon
- chillies (Capsicum annuum)Capsicum annuumt0
- Treatment
- kraft paper packse0
- Outcome
- retained their coloure0
- Setting
- lower temp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“retained their colour at the lower temp. even in kraft paper packs”
t0“chillies (Capsicum annuum)”
The same questions in other papers
light · quality: postharvest · Capsicum annuum (sweet pepper)Positive and negative results
2 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.