Abstract
The post-harvest technologies of roselle must be developed to maintaining quality. There are no appropriate structures for the shelling ,drying, packaging and storage for the calyxes of Hibbiscus sabdariffa L and it appears that these operations are performed under unsuitable conditions leading to the deterioration of the quality of the Hibbiscus sabdariffa , Lcalyxes .For this, the effect of shelling methods ( hand and tools) ,drying processing (sun and oven drying), packaging materials and storage period on some quality of two cultivars of roselle calyxes extracts was studied. Dark and light roselle calyxes removed the seed’s capsules for obtained fresh roselle calyxes one shelling hand and the other tool shelling, and the after that drying is carried out after shelling by two ways first is sun drying and second way is an oven air dryer at 55Co for 36 hours to obtain 11% moisture content of dried roselle calyxes. All previously treatment of dark and light red roselle calyxes were divided into two groups randomly assigned to each of the treatment combinations one were packed in polypropylene (pp) package and the other packed in glass bottles as three hundred gram of each sample and stored for eight months at room temperature. Cultivars of roselle calyxes extracts, the packaging materials and storage period were highly significant effect for TSS, total acidity and pH but there are no significant different in anthocyanin with drying processing The two, three and four-way interactions were highly significant for TSS, total acidity and anthocyanin. Total soluble solids content was found to be increased by increasing storage period for both dark and light red roselle cultivars dried by (sun and oven) and packed in (polypropylene and glass bottles). Higher total soluble solids content was recorded for dark cultivar dried by oven packed in glass bottles after 8 months of storage. PH value for dark and light red roselle calyxes decreased with the increase in storage period for the two cultivar with two packaging material and two drying methods from zero days to the end of storage (after 8 months). The pH values of dark roselle extracts was higher than that of light red roselle extracts with all treatments. Dark and light red Roselle calyxes packaged in polypropylene showed pH values largest compared with packaged in glass bottles. The pH values of dark and light red roselle calyxes extracts dried by sun was less than that dried by oven for two packaging materials after 8 months of storage. Anthocyanin value decreased in roselle calyxes extracts of both dark and light cultivars with increasing storage period with all treatments. Anthocyanin value for dark cultivar was higher than the light cultivar. Dark and light roselle calyxes extracts packaged in polypropylene had anthocyanin value higher than that packaged in glass bottles during storage periods. Total acidity of dark and light roselle calyxes extracts increased with increasing storage period for all treatments. The dark roselle calyxes recorded the higher titratable acidity than light red roselle calyxes for all treatments during storage period. Titratable acidity of dark and light red roselle was highly with roselle calyxes dried by oven for two packaging materials throughout storage. Roselle calyxes packed in (pp) gave the lowest value titratable acidity as compared with roselle calyxes extracts packed in glass bottles for two cultivars.
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Claims 16
Claim · model-written summary
Cultivar, packaging and storage significantly affected soluble solids, acidity and pH.
- Taxon
- roselle
Hibiscus sabdariffae0 - Outcome
- TSS, total acidity and pHe0
- Qualifier
- storage periode0
Not reportedSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars of roselle calyxes extracts, the packaging materials and storage period were highly significant effect for TSS, total acidity and pH”
Claim · model-written summary
Drying process did not significantly affect anthocyanin.
- Taxon
- roselleHibiscus sabdariffat0
- Treatment
- drying processinge0
- Outcome
- anthocyanine0
- Direction
- no significant differente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there are no significant different in anthocyanin with drying processing”
t0“ROSELLE”
Claim · model-written summary
Two-, three- and four-way interactions significantly affected soluble solids, acidity and anthocyanin.
- Taxon
- roselleHibiscus sabdariffat0
- Treatment
- two, three and four-way interactionse0
- Outcome
- TSS, total acidity and anthocyanine0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two, three and four-way interactions were highly significant for TSS, total acidity and anthocyanin”
t0“ROSELLE”
Claim · model-written summary
Soluble solids increased over storage in both cultivars and drying and packaging combinations.
- Taxon
- roselleHibiscus sabdariffae0
- Treatment
- increasing storage periode0
- Outcome
- Total soluble solids contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total soluble solids content was found to be increased by increasing storage period for both dark and light red roselle cultivars dried by (sun and oven) and packed in (polypropylene and glass bottles)”
Claim · model-written summary
Dark cultivar dried in an oven and packed in glass had the highest soluble solids after eight months.
- Taxon
- roselleHibiscus sabdariffat0
- Material
- dark cultivare0
- Treatment
- dried by oven packed in glass bottlese0
- Outcome
- total soluble solids contente0
- Direction
- Highere0
- Qualifier
- after 8 months of storagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher total soluble solids content was recorded for dark cultivar dried by oven packed in glass bottles after 8 months of storage”
t0“ROSELLE”
Claim · model-written summary
Calyx pH decreased over eight months for both cultivars and all drying and packaging methods.
- Taxon
- roselleHibiscus sabdariffae0
- Treatment
- increase in storage periode0
- Outcome
- PH valuee0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PH value for dark and light red roselle calyxes decreased with the increase in storage period for the two cultivar with two packaging material and two drying methods from zero days to the end of storage (after 8 months)”
Claim · model-written summary
Dark roselle extracts had higher pH than light red extracts.
- Taxon
- roselleHibiscus sabdariffae0
- Material
- dark rosellee0
- Outcome
- pH valuese0
- Direction
- highere0
- Comparator
- light red roselle extractse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pH values of dark roselle extracts was higher than that of light red roselle extracts with all treatments”
Claim · model-written summary
Polypropylene-packed calyxes had higher pH than glass-packed calyxes.
- Taxon
- RoselleHibiscus sabdariffae0
- Treatment
- packaged in polypropylenee0
- Outcome
- pH valuese0
- Direction
- largeste0
- Comparator
- packaged in glass bottlese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dark and light red Roselle calyxes packaged in polypropylene showed pH values largest compared with packaged in glass bottles”
Claim · model-written summary
Sun-dried calyx extracts had lower pH than oven-dried extracts after eight months.
- Taxon
- roselleHibiscus sabdariffae0
- Treatment
- dried by sune0
- Outcome
- pH valuese0
- Direction
- less thane0
- Qualifier
- after 8 months of storagee0
- Comparator
- dried by ovene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pH values of dark and light red roselle calyxes extracts dried by sun was less than that dried by oven for two packaging materials after 8 months of storage”
Claim · model-written summary
Anthocyanin declined with storage for both cultivars.
- Taxon
- roselleHibiscus sabdariffae0
- Treatment
- increasing storage periode0
- Outcome
- Anthocyanin valuee0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anthocyanin value decreased in roselle calyxes extracts of both dark and light cultivars with increasing storage period with all treatments”
Claim · model-written summary
Dark cultivar had higher anthocyanin than light cultivar.
- Taxon
- roselleHibiscus sabdariffat0
- Material
- dark cultivare0
- Outcome
- Anthocyanin valuee0
- Direction
- highere0
- Comparator
- light cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anthocyanin value for dark cultivar was higher than the light cultivar”
t0“ROSELLE”
Claim · model-written summary
Polypropylene-packed calyxes had higher anthocyanin than glass-packed calyxes.
- Taxon
- roselleHibiscus sabdariffae0
- Treatment
- packaged in polypropylenee0
- Outcome
- anthocyanin valuee0
- Direction
- highere0
- Comparator
- packaged in glass bottlese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dark and light roselle calyxes extracts packaged in polypropylene had anthocyanin value higher than that packaged in glass bottles during storage periods”
Claim · model-written summary
Total acidity rose with storage in both cultivars.
- Taxon
- roselleHibiscus sabdariffae0
- Treatment
- increasing storage periode0
- Outcome
- Total aciditye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total acidity of dark and light roselle calyxes extracts increased with increasing storage period for all treatments”
Claim · model-written summary
Dark calyxes had higher titratable acidity than light red calyxes.
- Taxon
- roselleHibiscus sabdariffae0
- Material
- dark rosellee0
- Outcome
- titratable aciditye0
- Direction
- highere0
- Comparator
- light red roselle calyxese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dark roselle calyxes recorded the higher titratable acidity than light red roselle calyxes for all treatments during storage period”
Claim · model-written summary
Oven-dried calyxes had high titratable acidity across packaging and storage.
- Taxon
- roselleHibiscus sabdariffae0
- Treatment
- dried by ovene0
- Outcome
- Titratable aciditye0
- Direction
- highlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Titratable acidity of dark and light red roselle was highly with roselle calyxes dried by oven for two packaging materials throughout storage”
Claim · model-written summary
Polypropylene-packed calyxes had lower titratable acidity than glass-packed calyxes.
- Taxon
- RoselleHibiscus sabdariffae0
- Treatment
- packed in (pp)e0
- Outcome
- titratable aciditye0
- Direction
- loweste0
- Comparator
- packed in glass bottlese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Roselle calyxes packed in (pp) gave the lowest value titratable acidity as compared with roselle calyxes extracts packed in glass bottles for two cultivars”