Pilot scale production of sugars from sago starch

Production of sugars was performed at lab scale (1L) from hydrolysis of various types of starch (sago, corn, tapioca and sweet potato flour). The starch slurries was enzymatically hydrolysed for four hours at the starch concentration of 20% DS (200g of starch powder suspended in 1L water). Filtrati...

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Main Author:	Hafizah, Booty
Format:	Thesis
Language:	English
Published:	2011
Subjects:	GE Environmental Sciences SB Plant culture
Online Access:	http://ir.unimas.my/id/eprint/12077/1/Hafizah.pdf
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id	my-unimas-ir.12077
record_format	uketd_dc
spelling	my-unimas-ir.120772023-05-03T08:32:46Z Pilot scale production of sugars from sago starch 2011 Hafizah, Booty GE Environmental Sciences SB Plant culture Production of sugars was performed at lab scale (1L) from hydrolysis of various types of starch (sago, corn, tapioca and sweet potato flour). The starch slurries was enzymatically hydrolysed for four hours at the starch concentration of 20% DS (200g of starch powder suspended in 1L water). Filtration of sugar syrup with powdered activated charcoal (PAC) was made and the measurement of glucose was based on the yield referred as dextrose equivalent (DE). Upon filtration, the highest sugar (mainly glucose) recovery was produced by sago starch at 99% DE, followed by corn starch (84% DE), tapioca starch (76% DE) and sweet potato starch (72% DE). The effectsl of different starch concentrations in hydrolysis of sago starch (HSS) were then studied) Evidently, 50% DS generated the highest amount of total reducing sugars (TRS) compared to 40%, 30% and 20% DS at 413 g/L, 377 g/L, 298 g/L, and 205 g/L, respectively. However, the amount of glucose produced from filtered HSS (20% DS) gave the highest recovery (99% DE), a much higher concentration of glucose produced compared to 30% DS (89% DE) and 40% DS (81% DE). Furthermore, the concentration of 50% DS produced the lowest sugar yield at only 63% DE. Enzymatic hydrolysis of sago starch was performed thereafter at a larger scale using 20% DS of sago starch at 5L and 50L working volumes. It was observed that 1,000g of sago starch (suspended in 5L water) yields 66% DE after PAC compared to 62% DE produced from hydrolysed of 10,000g of sago starch. Consequently, scaling up the process from 200g to 1,000g reduced the sugar yield by 33% (99% to 66%), but scaling up further 1,000g to 10,000g reduced the sugars yield by only 4% (66% to 62% DE). These results confirmed that the process could be further scaled up without significant loss in sugar yield. In addition, 60°C was proved to be the best temperature conditions for sugar syrup or hydrolysed sago starch (HSS). Sago starch seems to be the most promising as an alternative raw material for the sugar industry of Malaysia. Universiti Malaysia Sarawak, (UNIMAS) 2011 Thesis http://ir.unimas.my/id/eprint/12077/ http://ir.unimas.my/id/eprint/12077/1/Hafizah.pdf text en validuser masters Universiti Malaysia Sarawak, (UNIMAS) Faculty of Resource Science and Technology
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English
topic	GE Environmental Sciences SB Plant culture
spellingShingle	GE Environmental Sciences SB Plant culture Hafizah, Booty Pilot scale production of sugars from sago starch
description	Production of sugars was performed at lab scale (1L) from hydrolysis of various types of starch (sago, corn, tapioca and sweet potato flour). The starch slurries was enzymatically hydrolysed for four hours at the starch concentration of 20% DS (200g of starch powder suspended in 1L water). Filtration of sugar syrup with powdered activated charcoal (PAC) was made and the measurement of glucose was based on the yield referred as dextrose equivalent (DE). Upon filtration, the highest sugar (mainly glucose) recovery was produced by sago starch at 99% DE, followed by corn starch (84% DE), tapioca starch (76% DE) and sweet potato starch (72% DE). The effectsl of different starch concentrations in hydrolysis of sago starch (HSS) were then studied) Evidently, 50% DS generated the highest amount of total reducing sugars (TRS) compared to 40%, 30% and 20% DS at 413 g/L, 377 g/L, 298 g/L, and 205 g/L, respectively. However, the amount of glucose produced from filtered HSS (20% DS) gave the highest recovery (99% DE), a much higher concentration of glucose produced compared to 30% DS (89% DE) and 40% DS (81% DE). Furthermore, the concentration of 50% DS produced the lowest sugar yield at only 63% DE. Enzymatic hydrolysis of sago starch was performed thereafter at a larger scale using 20% DS of sago starch at 5L and 50L working volumes. It was observed that 1,000g of sago starch (suspended in 5L water) yields 66% DE after PAC compared to 62% DE produced from hydrolysed of 10,000g of sago starch. Consequently, scaling up the process from 200g to 1,000g reduced the sugar yield by 33% (99% to 66%), but scaling up further 1,000g to 10,000g reduced the sugars yield by only 4% (66% to 62% DE). These results confirmed that the process could be further scaled up without significant loss in sugar yield. In addition, 60°C was proved to be the best temperature conditions for sugar syrup or hydrolysed sago starch (HSS). Sago starch seems to be the most promising as an alternative raw material for the sugar industry of Malaysia.
format	Thesis
qualification_level	Master's degree
author	Hafizah, Booty
author_facet	Hafizah, Booty
author_sort	Hafizah, Booty
title	Pilot scale production of sugars from sago starch
title_short	Pilot scale production of sugars from sago starch
title_full	Pilot scale production of sugars from sago starch
title_fullStr	Pilot scale production of sugars from sago starch
title_full_unstemmed	Pilot scale production of sugars from sago starch
title_sort	pilot scale production of sugars from sago starch
granting_institution	Universiti Malaysia Sarawak, (UNIMAS)
granting_department	Faculty of Resource Science and Technology
publishDate	2011
url	http://ir.unimas.my/id/eprint/12077/1/Hafizah.pdf
_version_	1783728103968735232

Pilot scale production of sugars from sago starch

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