Chlorophyll degradation in the bract of dragon fruit (Hylocereus spp.)

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Kammapana L., Jitareerat P., Wongs-Aree C., Srilaong V., Yamuchi N.

ผู้เผยแพร่: International Society for Horticultural Science (ISHS)

ปีที่เผยแพร่ (ค.ศ.): 2015

วารสาร: Acta Horticulturae (0567-7572)

Volume number: 1088

หน้าแรก: 79

หน้าสุดท้าย: 84

จำนวนหน้า: 6

ISBN: 9789462610828

นอก: 0567-7572

eISSN: 2406-6168

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940122066&doi=10.17660%2fActaHortic.2015.1088.8&partnerID=40&md5=271610b4c5cf13f0ae009e0325f8f498

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

Loss of greenness in the bract due to chlorophyll (Chl) degradation is one of the symptoms of senescence in dragon fruit (Hylocereus spp.). Chl degradation enzyme activities (chlorophyllase - Chlase, Mg-dechelatase - MD, chlorophylldegrading peroxidase - Chl-POX and pheophytinase - PPH), Chl derivatives (chlorophyllide a - Chlidea, pheophorbide a - Pheide a, pheophytin a - Phein a and 132-hydroxychlorophyll - OHChl a), and Chl content were assayed during storage at 25ฐC. Chl a content decreased with storage while Chl b content remained unchanged. Chlase activity increased after one day of storage and decreased thereafter. MD and PPH activity increased gradually for the first two days of storage while Chl-POX activity increased during the first five days of storage and then decreased. Chlide a, Pheide a and OHChl a were undetectable throughout storage, while Phein a increased during storage. The results indicate that MD and PPH may be involved in Chl degradation. Chl derivatives, particularly Pheina, were accumulated as intermediate products during Chl degradation.

คำสำคัญ

Chlorophyll degradation enzymes