Vanilla content evaluation in cured bean by nearinfrared technique

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Wongsheree T., Rittiron R., Wongs-Aree C., Thongtheing T.

ผู้เผยแพร่: International Society for Horticultural Science (ISHS)

ปีที่เผยแพร่ (ค.ศ.): 2016

วารสาร: Acta Horticulturae (0567-7572)

Volume number: 1119

หน้าแรก: 297

หน้าสุดท้าย: 304

จำนวนหน้า: 8

ISBN: 9789462611177

นอก: 0567-7572

eISSN: 2406-6168

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978782722&doi=10.17660%2fActaHortic.2016.1119.41&partnerID=40&md5=80e53ba89a37bf6ca84db3a287de9c66

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

Vanillin content is the major quality attribute of cured vanilla beans. However, bean quality is commonly assessed visually. The current standard method for analysis of vanillin content is destructive, slow, and impractical. Therefore alternatively nondestructive methods like near-infrared spectroscopy (NIRS) for determination of vanillin and dry matter content of cured beans should be commercially beneficial. The light absorbance of 130 beans was measured by both a portable NIR spectrometer and a Fourier Transform (FT)-NIR spectrometer in the reflection mode for development of calibration equation, compared with the dry matter and the vanillin content chemically extracted and analysed by HPLC standard method. The Partial Least Squares Regression (PLSR) models were based on the spectra of 99 beans, with validation on further 31 beans. The model developed using the portable spectrometer (wavelength region of 600-1,100 nm) allowed determination of the vanillin content with standard error of calibration (SEC) = 2.58%, standard error of prediction (SEP) = 2.77%, and average error (bias) = 0.60%. The calibration statistics for the FT-NIR spectrometer (wavelength region of 1200-2500 nm) were: SEC=2.11%, SEP=2.03%, and bias=-0.07%. For the attribute of dry matter (DM), a correlation coefficient (R) of 0.96 was obtained for both spectrometers. Both vanillin and DM models could be used to predict the contents without significant difference between actual and NIR predicted values at 95% confidence level. NIR spectroscopy has a high potential for evaluation of DM and vanillin content in cured vanilla bean.

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