Evaluation Of Extraction Methods And Storage Temperatures On The Quality Characteristics Of Juices From Different Pineaple Cultivars.
ABSTRACT
Production of juices from two
cultivars of pineapple (Ananas comosus Merril) using two extraction methods
(mechanical and manual) were investigated. Chemical (Total titratable acidity
(%TTA), Total soluble sugar (TSS) and pH) and microbial characteristics of the
juices stored at ambient and refrigeration temperatures for 4 days were also
assessed. The results showed that % hA and microbial load increased with
storage while TSS and pH decreased. This was attributed to microbial
fermentation of sugar in the juices. Comparingly, 4 however the smooth cayenne
pineapple juice extracted mechanically and stored at both ambient and
refrigeration temperature. (27°C and 14°C respectively) gave a lower microbial
count (1.4 x iO4Cfu/ml) than the queen cultivar subjected to the same
treatment. The micro-organisms isolated were bacteria such as Bacillus spp,
Lactobacillus spp and fungi such as Penicillum spp, Rhizopus spp and
Saccharomyces spp. The result indicated that smooth cayenne pineapple produced
juice which has a higher shelf life than the queen cultivar because of its low
pH, slightly higher acidity and lower total soluble sugars. Microorganism were
not able to spoil the juice rapidly as they did to queen pineapple juice.
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OKEZIE, E (2021). Evaluation Of Extraction Methods And Storage Temperatures On The Quality Characteristics Of Juices From Different Pineaple Cultivars. . Mouau.afribary.org: Retrieved Nov 24, 2024, from https://repository.mouau.edu.ng/work/view/evaluation-of-extraction-methods-and-storage-temperatures-on-the-quality-characteristics-of-juices-from-different-pineaple-cultivars-7-2
EZINNE, OKEZIE. "Evaluation Of Extraction Methods And Storage Temperatures On The Quality Characteristics Of Juices From Different Pineaple Cultivars. " Mouau.afribary.org. Mouau.afribary.org, 14 Jul. 2021, https://repository.mouau.edu.ng/work/view/evaluation-of-extraction-methods-and-storage-temperatures-on-the-quality-characteristics-of-juices-from-different-pineaple-cultivars-7-2. Accessed 24 Nov. 2024.
EZINNE, OKEZIE. "Evaluation Of Extraction Methods And Storage Temperatures On The Quality Characteristics Of Juices From Different Pineaple Cultivars. ". Mouau.afribary.org, Mouau.afribary.org, 14 Jul. 2021. Web. 24 Nov. 2024. < https://repository.mouau.edu.ng/work/view/evaluation-of-extraction-methods-and-storage-temperatures-on-the-quality-characteristics-of-juices-from-different-pineaple-cultivars-7-2 >.
EZINNE, OKEZIE. "Evaluation Of Extraction Methods And Storage Temperatures On The Quality Characteristics Of Juices From Different Pineaple Cultivars. " Mouau.afribary.org (2021). Accessed 24 Nov. 2024. https://repository.mouau.edu.ng/work/view/evaluation-of-extraction-methods-and-storage-temperatures-on-the-quality-characteristics-of-juices-from-different-pineaple-cultivars-7-2