The physicochemical and antioxidant properties of double-boiled kelulut honey

Kelulut honey is a unique Malaysian food that has beneficial components and high potential in many health aspects. In commercial processing plant, honey is usually subjected to thermal treatment, where its quality is compromised due to unstable and thermolabile components. Therefore, double boiling...

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Main Author:	A. Rahman, Nur Atikah
Format:	Thesis
Language:	English English English
Published:	2019
Subjects:	QD450-801 Physical and theoretical chemistry
Online Access:	http://eprints.uthm.edu.my/622/1/24p%20NUR%20ATIKAH%20A.%20RAHMAN.pdf http://eprints.uthm.edu.my/622/2/NUR%20ATIKAH%20A.%20RAHMAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/622/3/NUR%20ATIKAH%20A.%20RAHMAN%20WATERMARK.pdf
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spelling	my-uthm-ep.6222021-08-11T04:56:38Z The physicochemical and antioxidant properties of double-boiled kelulut honey 2019-08 A. Rahman, Nur Atikah QD450-801 Physical and theoretical chemistry Kelulut honey is a unique Malaysian food that has beneficial components and high potential in many health aspects. In commercial processing plant, honey is usually subjected to thermal treatment, where its quality is compromised due to unstable and thermolabile components. Therefore, double boiling was chosen as it does not exert significant heat, thus minimizes damage done. The quality was determined after treated by double boiling technique at optimized condition. Three different sources of Kelulut honey based on the main types of foods consumed by the bees (Coconut, Multifloral and Wild Flowers) were tested. Kelulut honey samples were subjected to an optimized condition at 60 °C for 35 minutes. Thermal treatment at the same condition was conducted for comparison purpose. The results showed that double boiling treatment increased the total phenolic content of Kelulut-C honey significantly, from 2430.78 ± 12.24 to 2711.10 ± 23.00 mg GAE/100 g. The treatment also significantly increased the brown pigment for both Kelulut-C and Kelulut-W honey by 11.11 ± 0.00% and 27.27 ± 0.00%, respectively. Whereas, the pH and moisture content of all samples remain unchanged with no formation of hydroxymethylfurfural (HMF) was observed. A preliminary four-week storage study showed that double boiling treatment improves physicochemical properties of Kelulut honey as compared to the untreated samples for all three types of Kelulut honey tested. Meanwhile, a room temperature (27 °C) condition leads to an improvement of antioxidant properties as compared to cold temperature (4 °C). In conclusion, double boiling treatment has established itself as a good alternative processing method for Kelulut honey, hence increasing the possibility to bring forward Kelulut honey as a unique source for the application in food and beverages industries. 2019-08 Thesis http://eprints.uthm.edu.my/622/ http://eprints.uthm.edu.my/622/1/24p%20NUR%20ATIKAH%20A.%20RAHMAN.pdf text en public http://eprints.uthm.edu.my/622/2/NUR%20ATIKAH%20A.%20RAHMAN%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/622/3/NUR%20ATIKAH%20A.%20RAHMAN%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Teknologi Kejuruteraan
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	QD450-801 Physical and theoretical chemistry
spellingShingle	QD450-801 Physical and theoretical chemistry A. Rahman, Nur Atikah The physicochemical and antioxidant properties of double-boiled kelulut honey
description	Kelulut honey is a unique Malaysian food that has beneficial components and high potential in many health aspects. In commercial processing plant, honey is usually subjected to thermal treatment, where its quality is compromised due to unstable and thermolabile components. Therefore, double boiling was chosen as it does not exert significant heat, thus minimizes damage done. The quality was determined after treated by double boiling technique at optimized condition. Three different sources of Kelulut honey based on the main types of foods consumed by the bees (Coconut, Multifloral and Wild Flowers) were tested. Kelulut honey samples were subjected to an optimized condition at 60 °C for 35 minutes. Thermal treatment at the same condition was conducted for comparison purpose. The results showed that double boiling treatment increased the total phenolic content of Kelulut-C honey significantly, from 2430.78 ± 12.24 to 2711.10 ± 23.00 mg GAE/100 g. The treatment also significantly increased the brown pigment for both Kelulut-C and Kelulut-W honey by 11.11 ± 0.00% and 27.27 ± 0.00%, respectively. Whereas, the pH and moisture content of all samples remain unchanged with no formation of hydroxymethylfurfural (HMF) was observed. A preliminary four-week storage study showed that double boiling treatment improves physicochemical properties of Kelulut honey as compared to the untreated samples for all three types of Kelulut honey tested. Meanwhile, a room temperature (27 °C) condition leads to an improvement of antioxidant properties as compared to cold temperature (4 °C). In conclusion, double boiling treatment has established itself as a good alternative processing method for Kelulut honey, hence increasing the possibility to bring forward Kelulut honey as a unique source for the application in food and beverages industries.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	A. Rahman, Nur Atikah
author_facet	A. Rahman, Nur Atikah
author_sort	A. Rahman, Nur Atikah
title	The physicochemical and antioxidant properties of double-boiled kelulut honey
title_short	The physicochemical and antioxidant properties of double-boiled kelulut honey
title_full	The physicochemical and antioxidant properties of double-boiled kelulut honey
title_fullStr	The physicochemical and antioxidant properties of double-boiled kelulut honey
title_full_unstemmed	The physicochemical and antioxidant properties of double-boiled kelulut honey
title_sort	physicochemical and antioxidant properties of double-boiled kelulut honey
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Teknologi Kejuruteraan
publishDate	2019
url	http://eprints.uthm.edu.my/622/1/24p%20NUR%20ATIKAH%20A.%20RAHMAN.pdf http://eprints.uthm.edu.my/622/2/NUR%20ATIKAH%20A.%20RAHMAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/622/3/NUR%20ATIKAH%20A.%20RAHMAN%20WATERMARK.pdf
_version_	1747830648314265600

The physicochemical and antioxidant properties of double-boiled kelulut honey

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