Effect of rice quality, formulation and storage on the quality of canned rice porridge

Long-grain rice was mixed with broken rice or glutinous rice at a ratio of 0:100, 25:75, 50:50, 75:25 and 100:0, respectively. Each mixture was processed into canned plain rice porridge. The physical and sensory properties of the products were evaluated. An optimum ratio was selected for the prep...

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Main Author:	Ma, Yong Qin
Format:	Thesis
Language:	English English
Published:	2000
Subjects:	Rice - Malaysia Food supply - Malaysia
Online Access:	http://psasir.upm.edu.my/id/eprint/8721/1/FSMB_2000_10%20IR.pdf
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spelling	my-upm-ir.87212023-12-28T03:33:43Z Effect of rice quality, formulation and storage on the quality of canned rice porridge 2000-05 Ma, Yong Qin Long-grain rice was mixed with broken rice or glutinous rice at a ratio of 0:100, 25:75, 50:50, 75:25 and 100:0, respectively. Each mixture was processed into canned plain rice porridge. The physical and sensory properties of the products were evaluated. An optimum ratio was selected for the preparation of savoury rice porridge (chicken, beef, fish and bean flavours). The freshly prepared savoury rice porridges were then evaluated to determine their physicochemical, microbiological and sensory qualities. A storage study was also carried out to determine the quality changes of canned savoury rice porridges stored at 27°C and 4°C for 12 weeks. The results obtained showed that plain rice porridge was best prepared using 100% long-grain rice. However, plain rice porridge prepared using a mixture of broken rice and long-grain rice at a ratio of 50:50 was found to be as acceptable as that containing 100% long-grain rice. Incorporation of glutinous rice reduced phase separation but in excess of 25 percent led to a significant decrease in acceptability. Physical characteristics of the plain rice porridge were relatively unchanged with the substitution of long-grain rice with broken rice. When long-grain rice was substituted with increasing amounts of glutinous rice, the pH value and whiteness of the plain rice porridge tended to decrease but its %Brix and viscosity increased gradually. For the savoury rice porridges, the results of the ranking test revealed that the fish rice porridge was the most preferred followed by the beef, chicken and bean rice porridges in terms of colour, texture, flavour and taste. Results of the nutrient composition analyses showed that the beef rice porridge provided the highest protein, fat, and caloric contents and the most amounts of calcium and iron. Results of the storage study indicated that the temperature and time of storage did not affect dry matter, ash, protein, fat, caloric, calcium and iron content of the porridges. However, low storage temperature caused the porridges to have a lower %Brix and increase in whiteness. Porridges stored at room temperature were more stable in appearance, colour, flavour and taste than those stored in the refrigerator. A composite of broken rice and long-grain rice at a ratio of 50:50 is recommended for the production of plain rice porridge. A can of the four types of savoury rice porridges designed can provide 1/4- 1/5 of the recommended daily allowance (RDA) for energy and nutrients for 7-12 years old children. All samples stored at room temperature or in the refrigerator complied with the standard for food hygiene and safety up to 12 weeks of storage. However, canned rice porridge stored at room temperature gave better sensory characteristics. Rice - Malaysia Food supply - Malaysia 2000-05 Thesis http://psasir.upm.edu.my/id/eprint/8721/ http://psasir.upm.edu.my/id/eprint/8721/1/FSMB_2000_10%20IR.pdf text en public masters Universiti Putra Malaysia Rice - Malaysia Food supply - Malaysia Faculty of Food Science and Technology Syed Muhammad, Sharifah Kharidah English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
advisor	Syed Muhammad, Sharifah Kharidah
topic	Rice - Malaysia Food supply - Malaysia
spellingShingle	Rice - Malaysia Food supply - Malaysia Ma, Yong Qin Effect of rice quality, formulation and storage on the quality of canned rice porridge
description	Long-grain rice was mixed with broken rice or glutinous rice at a ratio of 0:100, 25:75, 50:50, 75:25 and 100:0, respectively. Each mixture was processed into canned plain rice porridge. The physical and sensory properties of the products were evaluated. An optimum ratio was selected for the preparation of savoury rice porridge (chicken, beef, fish and bean flavours). The freshly prepared savoury rice porridges were then evaluated to determine their physicochemical, microbiological and sensory qualities. A storage study was also carried out to determine the quality changes of canned savoury rice porridges stored at 27°C and 4°C for 12 weeks. The results obtained showed that plain rice porridge was best prepared using 100% long-grain rice. However, plain rice porridge prepared using a mixture of broken rice and long-grain rice at a ratio of 50:50 was found to be as acceptable as that containing 100% long-grain rice. Incorporation of glutinous rice reduced phase separation but in excess of 25 percent led to a significant decrease in acceptability. Physical characteristics of the plain rice porridge were relatively unchanged with the substitution of long-grain rice with broken rice. When long-grain rice was substituted with increasing amounts of glutinous rice, the pH value and whiteness of the plain rice porridge tended to decrease but its %Brix and viscosity increased gradually. For the savoury rice porridges, the results of the ranking test revealed that the fish rice porridge was the most preferred followed by the beef, chicken and bean rice porridges in terms of colour, texture, flavour and taste. Results of the nutrient composition analyses showed that the beef rice porridge provided the highest protein, fat, and caloric contents and the most amounts of calcium and iron. Results of the storage study indicated that the temperature and time of storage did not affect dry matter, ash, protein, fat, caloric, calcium and iron content of the porridges. However, low storage temperature caused the porridges to have a lower %Brix and increase in whiteness. Porridges stored at room temperature were more stable in appearance, colour, flavour and taste than those stored in the refrigerator. A composite of broken rice and long-grain rice at a ratio of 50:50 is recommended for the production of plain rice porridge. A can of the four types of savoury rice porridges designed can provide 1/4- 1/5 of the recommended daily allowance (RDA) for energy and nutrients for 7-12 years old children. All samples stored at room temperature or in the refrigerator complied with the standard for food hygiene and safety up to 12 weeks of storage. However, canned rice porridge stored at room temperature gave better sensory characteristics.
format	Thesis
qualification_level	Master's degree
author	Ma, Yong Qin
author_facet	Ma, Yong Qin
author_sort	Ma, Yong Qin
title	Effect of rice quality, formulation and storage on the quality of canned rice porridge
title_short	Effect of rice quality, formulation and storage on the quality of canned rice porridge
title_full	Effect of rice quality, formulation and storage on the quality of canned rice porridge
title_fullStr	Effect of rice quality, formulation and storage on the quality of canned rice porridge
title_full_unstemmed	Effect of rice quality, formulation and storage on the quality of canned rice porridge
title_sort	effect of rice quality, formulation and storage on the quality of canned rice porridge
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Food Science and Technology
publishDate	2000
url	http://psasir.upm.edu.my/id/eprint/8721/1/FSMB_2000_10%20IR.pdf
_version_	1794018776609456128

Effect of rice quality, formulation and storage on the quality of canned rice porridge

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