Abstract
Onion (Allium cepa L.) is one of the oldest bulb crops, known to mankind and consumed worldwide. It is valued for its distinct pungent flavour and is an essential ingredient for the cuisine of many regions. This study aimed to develop and evaluate the performance of a refrigerated onion storage facility. The designed facility was simple, efficient, and cost-effective, with a focus on user-friendly operation and packaging of onions in zippered bags. The experiment involved slicing and dicing onions of equal size, which were then placed in zip bags and monitored over a week. The mass of the samples was measured daily to observe the changes. Additionally, laboratory analysis was conducted to assess the proximate composition, phytochemical contents, and heavy metal concentration of the onions. The results showed that the storage facility maintained a cooling rate of 0oC and experienced fluctuations in temperature due to external weather conditions. The relative humidity ranged from 18% to 19%, indicating the coldness of the storage facility. The analysis of the onion samples revealed high moisture content, with values ranging from 80% to 90%. Other compositional parameters such as crude protein, CHO, crude fibre, fat content, and ash content were relatively low. In terms of phytochemical analysis, flavonoid content was found to be relatively high compared to saponin, alkaloid, and tannin contents. Flavonoid content was highest in the raw state of the onion. Heavy metal analysis showed significant differences in the concentrations of iron (Fe), manganese (Mn), and zinc (Zn), while copper (Cu) did not exhibit a significant effect. The developed refrigerated onion storage facility demonstrated promising performance. The proximate composition analysis indicated that before and after storage of the onions, the moisture content and nutrients of onions was maintained. The phytochemical analysis revealed a significant presence of flavonoids, while heavy metal analysis showed varying concentrations of Fe, Mn, Zn, and Cu.
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Claims 12
Claim · model-written summary
The facility maintained a cooling rate of 0oC.
- Taxon
- Onion
Allium cepat0 - Outcome
- cooling ratee0
- Value
- 0oCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the storage facility maintained a cooling rate of 0oC”
t0“Onion”
Claim · model-written summary
Facility temperature fluctuated with external weather.
- Taxon
- OnionAllium cepat0
- Outcome
- fluctuations in temperaturee0
- Qualifier
- external weather conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“experienced fluctuations in temperature due to external weather conditions”
t0“Onion”
Claim · model-written summary
Relative humidity ranged from 18% to 19%.
- Taxon
- OnionAllium cepat0
- Outcome
- relative humiditye0
- Value
- 18% to 19%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative humidity ranged from 18% to 19%”
t0“Onion”
Claim · model-written summary
Onion moisture content ranged from 80% to 90%.
- Taxon
- onionAllium cepae0
- Outcome
- moisture contente0
- Value
- 80% to 90%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“onion samples revealed high moisture content, with values ranging from 80% to 90%”
Claim · model-written summary
Crude protein, CHO, crude fibre, fat and ash contents were relatively low.
- Taxon
- OnionAllium cepat0
- Outcome
- crude protein, CHO, crude fibree0
- Direction
- relatively lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Other compositional parameters such as crude protein, CHO, crude fibre, fat content, and ash content were relatively low”
t0“Onion”
Claim · model-written summary
Flavonoid content was relatively high compared with saponin, alkaloid and tannin contents.
- Taxon
- OnionAllium cepat0
- Outcome
- flavonoid contente0
- Direction
- relatively highe0
- Comparator
- saponin, alkaloid, and tannin contentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flavonoid content was found to be relatively high compared to saponin, alkaloid, and tannin contents”
t0“Onion”
Claim · model-written summary
Flavonoid content was highest in raw onion.
- Taxon
- onionAllium cepae0
- Organ / stage
- raw statee0
- Outcome
- Flavonoid contente0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flavonoid content was highest in the raw state of the onion”
Claim · model-written summary
Iron concentrations differed significantly.
- Taxon
- OnionAllium cepat0
- Outcome
- concentrations of iron (Fe)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences in the concentrations of iron (Fe), manganese (Mn), and zinc (Zn)”
t0“Onion”
Claim · model-written summary
Manganese concentrations differed significantly.
- Taxon
- OnionAllium cepat0
- Outcome
- manganese (Mn)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences in the concentrations of iron (Fe), manganese (Mn), and zinc (Zn)”
t0“Onion”
Claim · model-written summary
Zinc concentrations differed significantly.
- Taxon
- OnionAllium cepat0
- Outcome
- zinc (Zn)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant differences in the concentrations of iron (Fe), manganese (Mn), and zinc (Zn)”
t0“Onion”
Claim · model-written summary
Copper concentration showed no significant effect.
- Taxon
- OnionAllium cepat0
- Outcome
- copper (Cu)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“copper (Cu) did not exhibit a significant effect”
t0“Onion”
Claim · model-written summary
Onion moisture and nutrients were maintained before and after storage.
- Taxon
- onionsAllium cepae0
- Treatment
- after storagee0
- Outcome
- moisture content and nutrientse0
- Direction
- maintainede0
- Comparator
- beforee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“before and after storage of the onions, the moisture content and nutrients of onions was maintained”
The same questions in other papers
storage · quality: grain · Allium cepa (onion)Results agree
2 papers in the same direction as this paper
- 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.