The production of starch from local sweet potato of vitato variety and its efficient process design

Selvadurai, Suganthi (2020) The production of starch from local sweet potato of vitato variety and its efficient process design. [Project Paper] (Submitted)

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Abstract

This research aims to design an efficient starch production from VitAto, new local variety sweet potato. This study divided into 2 phases; (1) characterisation of the lab produced VitAto starch properties while comparing them with selected commercial sweet potato starches; and (2) establish efficient processing steps involved in the production of VitAto starch and by-products using computer-aided process simulation. Findings in phase 1 of this study showed that the lab produced VitAto starch has a yield of 6.8%. It has the highest protein (0.365g/100g) and total fat (0.125g/100g) compared to the commercial counterparts indicating its suitable in the bakeries industry as it can help to improve the overall structure of baked products. Besides, VitAto starch has an average particle size of 12.545 um with an acidic pH between 4 to 4.4. The starch has high specific surface area granules, which suggest its suitability for snack food products. In flowability analysis, VitAto starch categorised as easy flowing and stable powders. It was low bulk density but high in the water absorption index. However, the starch was prone to caking. Hence proper packaging systems and low moisture content conditions during storage and processing are required. Yet, the findings in this study provide evidence that VitAto starch has all quality at the same par as its commercial counterparts. In the second phase of this study, new process design has proposed for an efficient VitAto starch production without neglecting the by-products such as fibre and juice. The proposed process design includes concrete storage silo, stationary screening, bulk flow washing, mixing, grinding, centrifugation, centrifugal sieving, fluid flow, hydro cyclone, rotary vacuum filtration and rotary drying.

Item Type:	Project Paper
Faculty:	Faculty of Engineering
Depositing User:	Ms. AZLINA ZAINAL ABIDIN
Date Deposited:	19 Oct 2023 07:47
Last Modified:	19 Oct 2023 07:47
URI:	http://psaspb.upm.edu.my/id/eprint/1598

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