Characterisation of floral anthocyanins and their antioxidant activity in Vanda hybrid (V. teres x V. hookeriana)

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Junka N., Kanlayanarat S., Buanong M., Wongs-Aree C.

ผู้เผยแพร่: WFL Publisher

ปีที่เผยแพร่ (ค.ศ.): 2012

วารสาร: Journal of Food, Agriculture and Environment (1459-0255)

Volume number: 10

Issue number: 2

หน้าแรก: 221

หน้าสุดท้าย: 226

จำนวนหน้า: 6

นอก: 1459-0255

eISSN: 1459-0263

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862223920&partnerID=40&md5=89d3d6ccf2f485fee6a80a1b5d230523

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

The major anthocyanins and the antioxidant activity of sequentially extracted anthocyanins were evaluated in anthocyanin-based coloured florets of a Vanda hybrid (V. teres x V. hookeriana). Anthocyanins of this Vanda hybrid are less common anthocyanins, the molecules of which showed a bathochromic shift effect and additional peaks of maximum photoabsorption when incubated in two different pH values of 1.0 and 4.5 because of the complexation of a copigment in a molecule. Based on high-performance liquid chromatograph-photodiode array detector (HPLC-PDA) separation, the floral anthocyanins from the Vanda hybrid were only derived from cyanidin. A liquid chromatography-mass spectrometry (LC-ESI-MSn) analysis disclosed 5 major types of cyanidin derivatives were conjugated with hexose sugars and some organic acids that affected the stability of anthocyanin molecules. The extracted anthocyanins from butterfly pea flowers had the lowest molecular change after long storage period showing the delta absorbance (ΔAbs) valued at 0.07 followed by those of Vanda hybrid florets and red grape at 0.12 and 0.20, respectively, after 6 month storage at 25°C in the dark. Modification of conjugating residue patterns of Vanda hybrid anthocyanins was detected by delta E* (ΔE*), which revealed that the saponified anthocyanins had the lowest change at 10.01, while the raw extracted anthocyanins had the highest change at 13.18. The radical- scavenging activity (RSA) of saponified anthocyanin samples was significantly higher than that of extracted and purified samples especially at higher concentrations.

คำสำคัญ

Anthocyanin structure, Stabilitity, Vanda hybrid (V. teres x V. hookeriana)