dc.contributor.author | Angoku, Joyce | |
dc.date.accessioned | 2021-02-17T11:44:40Z | |
dc.date.available | 2021-02-17T11:44:40Z | |
dc.date.issued | 2021-02-08 | |
dc.identifier.citation | Angoku, J. (2021). Development of dietary fiber powder supplement from pineapple wastes (Ananas comosus merr).. Undergraduate dissertation. Makerere University | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12281/8842 | |
dc.description | A Research Project Report Submitted to the Department of Food Science and Nutrition in Partial Fulfilment of the Requirements for the Award of the Degree of Bachelor of Science in Food Science and Technology of Makerere University | en_US |
dc.description.abstract | The objective of the study was to develop a dietary fiber powder supplement from smooth
Cayenne pineapple residual waste for use in food formulations to enhance fiber consumption in
the diet. This helps reduce the gap between individual‟s dietary intake and the Recommended
Dietary Intake (RDI).
The pineapples were washed, peeled and crushed to extract the juice then sieved to remove the
residues. The residual pulp and stems were dried at 65°C for 24 hours in a draft oven then
ground to a powder. The pineapple powder was divided into four portions and each subjected to
separate treatment of blanching at 90°C for 5 minutes and bleaching with 96% ethanol. One
portion of the powder was blanched and bleached, the other portion was only blanched, another
portion was bleached but not blanched and the control sample was unbleached and not blanched.
The effect of blanching and bleaching on the proximate and physicochemical characteristics of
the powder were determined using AOAC standard methods.
The results indicated that the unblanched and not bleached sample had fiber content of 17.3 %.
The blanched but unbleached sample had 28.1 % fiber content and the unblanched but bleached
sample had a fiber content of 25.2 %.The blanched and bleached sample had fiber content of
37.5%. The bleached samples had the highest protein content of 4.6 and 4.5 respectively
compared to the unbleached samples (2.6 and 2.5). The bleached samples had higher water
absorption capacity (497.2 % and 591.8 %), oil absorption capacity (260.5 % and 292.7 %) and
pH. (4.3 to 4.4) than the unbleached samples. There was no significant difference (p<0.05) in the
crude fat and bulk density of the 4 different pineapple powder samples. The dietary fiber
pineapple powder from this study has physiochemical properties that make it suitable for
inclusion in food formulations to produce products with desired functional properties. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Makerere University | en_US |
dc.subject | Pineapples | en_US |
dc.subject | Dietary Fibre | en_US |
dc.subject | Pineapple wastes | en_US |
dc.title | Development of dietary fiber powder supplement from pineapple wastes (Ananas comosus merr). | en_US |
dc.type | Thesis | en_US |