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Please use this identifier to cite or link to this item: https://ptsldigital.ukm.my/jspui/handle/123456789/578668
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dc.contributor.authorFadzliana N. A. F (UPM)
dc.contributor.authorRogayah S (UPM)
dc.contributor.authorShaharuddin N. A (UPM)
dc.contributor.authorJanna O. A (UPM)
dc.date.accessioned2023-11-06T03:05:28Z-
dc.date.available2023-11-06T03:05:28Z-
dc.date.issued2017-11
dc.identifier.issn1511-3701
dc.identifier.otherukmvital:116114
dc.identifier.urihttps://ptsldigital.ukm.my/jspui/handle/123456789/578668-
dc.descriptionThe aim of this study is to enhance betalain production in red pitaya (Hylocereus polyrhizus) callus through supplementation of the precursor L-tyrosine. Red-pigmented calli were produced on Murashige and Skoog (MS) basal salt medium supplemented with 2 mg/L naphthaleneacetic acid (NAA), 4 mg/L thidiazuron (TDZ) and different concentrations of L-tyrosine (20, 40, 60, 80, 100 mg/L). The addition of 20 mg/L L-tyrosine was able to increase betacyanin production by 1.5-fold compared to calli grown on Murashige and Skoog (MS) basal salt medium (MSO). The results also revealed that betalain production (calli cultured with 20 mg/L L-tyrosine) was higher than MS medium with 2 mg/L NAA and 4 mg/L TDZ (without L-tyrosine) up to 1.7-fold. Four compounds, namely betacyanin, betaxanthin and two additional compounds, phenolic and flavonoid compounds, were detected in the red-pigmented calli treated with 20 mg/L L-tyrosine that were not found in the fresh fruit sample. This indicates that the callus system has potential to produce betalain pigment and that red-pigmented calli could be an important antioxidant source.
dc.language.isoen
dc.publisherUniversiti Putra Malaysia Press
dc.relation.haspartPertanika Journals
dc.relation.urihttp://www.pertanika.upm.edu.my/regular_issues.php?jtype=1&journal=JTAS-40-4-11
dc.rightsUKM
dc.subjectHylocereus polyrhizus
dc.subjectBetalains
dc.subjectPrecursor
dc.subjectL-tyrosine
dc.subjectPitaya callus
dc.subjectAntioxidant
dc.titleAddition of l-tyrosine to improve betalain production in red Pitaya Callus
dc.typeJournal Article
dc.format.volume40
dc.format.pages521-532
dc.format.issue4
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