Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim

The primary aim of this study is to determine whether gelatin can be extracted from patin skins (Pangasiiis sutchi). Patin skins became by-products from fish processing industry and utilization of these by-products to produce valuable gelatin can give benefit to the entire world. From this study, ge...

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Main Author:	Hashim, Nadiah Hazwani
Format:	Thesis
Language:	English
Published:	2010
Subjects:	Physical and theoretical chemistry Extraction (Chemistry)
Online Access:	https://ir.uitm.edu.my/id/eprint/53012/1/53012.pdf
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spelling	my-uitm-ir.530122021-12-22T04:17:38Z Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim 2010 Hashim, Nadiah Hazwani Physical and theoretical chemistry Extraction (Chemistry) The primary aim of this study is to determine whether gelatin can be extracted from patin skins (Pangasiiis sutchi). Patin skins became by-products from fish processing industry and utilization of these by-products to produce valuable gelatin can give benefit to the entire world. From this study, gelatins were successfully extracted from patin skins. This study also important to determine the effect of different preservation methods on patin skins to their physical characteristics. Patin skins were preserved by two different methods and then washed by NaCl prior to gelatin extraction process. Patin skins preserved by freeze-drying method (FDPSG) exhibited higher yield extraction of gelatin which was 16.67% compared to yield of gelatin extracted from frozen patin skin at -20 °C (FPSG). However, there were no significant difference (p>0.05) between yield of FDPSG and FPSG. Those gelatins were compared with the commercial gelatin (CG) in terms of their pH, moisture content, colour, gel strength, texture profile analysis (TPA), viscoelastic properties and gelling and melting point. Compared to FDPSG and FPSG, CG had a significantly (p<0.05) higher pH and moisture content. Gel strength, springiness and chewiness of FDPSG was significantly (p<0.05) higher compared to those FPSG and CG. There were no significant (p>0.05) difference between FDPSG and FPSG in terms of hardness, cohesiveness and gumminess of gelatin. Patin gelatins are thermostated gels and this was evidenced by viscoelastic properties of FDPSG and FPSG. G' increased at low temperature and decreased at higher temperature. There was a negative relationship between phase angle (5) and storage modulus (G') where 8 decrease when the G' increase. CG was found to have a significantly (p<0.05) higher value of melting and gelling point compared to FDPSG and FPSG. Gelling and melting point of FDPSG and FPSG were not significantly (p>0.05) different. 2010 Thesis https://ir.uitm.edu.my/id/eprint/53012/ https://ir.uitm.edu.my/id/eprint/53012/1/53012.pdf text en public degree Universiti Teknologi MARA Faculty of Applied Sciences Ismail, Normah (Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Ismail, Normah (Dr.)
topic	Physical and theoretical chemistry Extraction (Chemistry)
spellingShingle	Physical and theoretical chemistry Extraction (Chemistry) Hashim, Nadiah Hazwani Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim
description	The primary aim of this study is to determine whether gelatin can be extracted from patin skins (Pangasiiis sutchi). Patin skins became by-products from fish processing industry and utilization of these by-products to produce valuable gelatin can give benefit to the entire world. From this study, gelatins were successfully extracted from patin skins. This study also important to determine the effect of different preservation methods on patin skins to their physical characteristics. Patin skins were preserved by two different methods and then washed by NaCl prior to gelatin extraction process. Patin skins preserved by freeze-drying method (FDPSG) exhibited higher yield extraction of gelatin which was 16.67% compared to yield of gelatin extracted from frozen patin skin at -20 °C (FPSG). However, there were no significant difference (p>0.05) between yield of FDPSG and FPSG. Those gelatins were compared with the commercial gelatin (CG) in terms of their pH, moisture content, colour, gel strength, texture profile analysis (TPA), viscoelastic properties and gelling and melting point. Compared to FDPSG and FPSG, CG had a significantly (p<0.05) higher pH and moisture content. Gel strength, springiness and chewiness of FDPSG was significantly (p<0.05) higher compared to those FPSG and CG. There were no significant (p>0.05) difference between FDPSG and FPSG in terms of hardness, cohesiveness and gumminess of gelatin. Patin gelatins are thermostated gels and this was evidenced by viscoelastic properties of FDPSG and FPSG. G' increased at low temperature and decreased at higher temperature. There was a negative relationship between phase angle (5) and storage modulus (G') where 8 decrease when the G' increase. CG was found to have a significantly (p<0.05) higher value of melting and gelling point compared to FDPSG and FPSG. Gelling and melting point of FDPSG and FPSG were not significantly (p>0.05) different.
format	Thesis
qualification_level	Bachelor degree
author	Hashim, Nadiah Hazwani
author_facet	Hashim, Nadiah Hazwani
author_sort	Hashim, Nadiah Hazwani
title	Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim
title_short	Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim
title_full	Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim
title_fullStr	Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim
title_full_unstemmed	Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim
title_sort	extraction and characterizations of gelatin from patin (pangasius sutchi) skins / nadiah hazwani hashim
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2010
url	https://ir.uitm.edu.my/id/eprint/53012/1/53012.pdf
_version_	1783734856900935680

Extraction and characterizations of gelatin from patin (Pangasius sutchi) skins / Nadiah Hazwani Hashim

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