Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan)
The extraction of pectin from dragon fruit (Hylocereus polyrhizus) peels under three different extraction conditions was identified as an alternative source of commercial pectin. In this work, dried alcohol-insoluble residues (AIR) of dragon fruit peels were treated separately with 0.25% ammonium ox...
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| Format: | Article |
| Language: | English |
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Universiti Kebangsaan Malaysia
2012
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| Online Access: | http://journalarticle.ukm.my/3228/ http://journalarticle.ukm.my/3228/1/05_Norazelina.pdf |
| _version_ | 1848810123202396160 |
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| author | Norazelina Sah Mohd. Ismail, Nazaruddin Ramli, Norziah Mohd. Hani, Zainudin Meon, |
| author_facet | Norazelina Sah Mohd. Ismail, Nazaruddin Ramli, Norziah Mohd. Hani, Zainudin Meon, |
| author_sort | Norazelina Sah Mohd. Ismail, |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | The extraction of pectin from dragon fruit (Hylocereus polyrhizus) peels under three different extraction conditions was identified as an alternative source of commercial pectin. In this work, dried alcohol-insoluble residues (AIR) of dragon fruit peels were treated separately with 0.25% ammonium oxalate/oxalic acid at a pH of 4.6 at 85oC; 0.03 M HCl at a pH of 1.5 at 85oC; and de-ionized water at 75oC. The pectin obtained from these methods was compared in terms of yield, physicochemical properties and chemical structure. Fourier Transform Infrared Spectroscopy (FTIR) was used in the identification of dragon fruit pectins. The results showed that the pectin yield (14.96-20.14% based on dry weight), moisture content (11.13-11.33%), ash content (6.88-11.55%), equivalent weight (475.64-713.99), methoxyl content (2.98-4.34%), anhydrouronic acid (45.25-52.45%) and the degree of esterification (31.05-46.96%) varied significantly (p < 0.05) with the various extraction conditions used. Pectin extracted with ammonium oxalate gave the highest yield of pectin, with high purity and low ash content. Based on the value of methoxyl content and the degree of esterification, dragon fruit pectin can be categorized as low-methoxyl pectin. |
| first_indexed | 2025-11-14T23:25:30Z |
| format | Article |
| id | oai:generic.eprints.org:3228 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T23:25:30Z |
| publishDate | 2012 |
| publisher | Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:32282016-12-14T06:34:00Z http://journalarticle.ukm.my/3228/ Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) Norazelina Sah Mohd. Ismail, Nazaruddin Ramli, Norziah Mohd. Hani, Zainudin Meon, The extraction of pectin from dragon fruit (Hylocereus polyrhizus) peels under three different extraction conditions was identified as an alternative source of commercial pectin. In this work, dried alcohol-insoluble residues (AIR) of dragon fruit peels were treated separately with 0.25% ammonium oxalate/oxalic acid at a pH of 4.6 at 85oC; 0.03 M HCl at a pH of 1.5 at 85oC; and de-ionized water at 75oC. The pectin obtained from these methods was compared in terms of yield, physicochemical properties and chemical structure. Fourier Transform Infrared Spectroscopy (FTIR) was used in the identification of dragon fruit pectins. The results showed that the pectin yield (14.96-20.14% based on dry weight), moisture content (11.13-11.33%), ash content (6.88-11.55%), equivalent weight (475.64-713.99), methoxyl content (2.98-4.34%), anhydrouronic acid (45.25-52.45%) and the degree of esterification (31.05-46.96%) varied significantly (p < 0.05) with the various extraction conditions used. Pectin extracted with ammonium oxalate gave the highest yield of pectin, with high purity and low ash content. Based on the value of methoxyl content and the degree of esterification, dragon fruit pectin can be categorized as low-methoxyl pectin. Universiti Kebangsaan Malaysia 2012-01 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/3228/1/05_Norazelina.pdf Norazelina Sah Mohd. Ismail, and Nazaruddin Ramli, and Norziah Mohd. Hani, and Zainudin Meon, (2012) Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan). Sains Malaysiana, 41 (1). pp. 41-45. ISSN 0126-6039 http://www.ukm.my/jsm/contents.html |
| spellingShingle | Norazelina Sah Mohd. Ismail, Nazaruddin Ramli, Norziah Mohd. Hani, Zainudin Meon, Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) |
| title | Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) |
| title_full | Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) |
| title_fullStr | Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) |
| title_full_unstemmed | Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) |
| title_short | Extraction and characterization of pectin from dragon fruit (Hylocereus polyrhizus) using various extraction conditions. (Pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) |
| title_sort | extraction and characterization of pectin from dragon fruit (hylocereus polyrhizus) using various extraction conditions. (pengekstrakan dan pencirian pektin daripada buah naga (hylocereus polyrhizus)menggunakan pelbagai keadaan pengekstrakan) |
| url | http://journalarticle.ukm.my/3228/ http://journalarticle.ukm.my/3228/ http://journalarticle.ukm.my/3228/1/05_Norazelina.pdf |