Structural modification by different pretreatment methods to enhance microwave-assisted extraction of β-carotene from carrots

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Hiranvarachat B., Devahastin S., Chiewchan N., Vijaya Raghavan G.S.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2013

วารสาร: Journal of Food Engineering (0260-8774)

Volume number: 115

Issue number: 2

หน้าแรก: 190

หน้าสุดท้าย: 197

จำนวนหน้า: 8

นอก: 0260-8774

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84869498111&doi=10.1016%2fj.jfoodeng.2012.10.012&partnerID=40&md5=5109199e65163fb4057f3510ed78e24b

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

Since the structure of a material is a key factor influencing the extraction efficiency, any means to modify the structure to enhance extraction is attractive. As limited information is available on the effect of sample pretreatment prior to extraction on the extractability of a bioactive compound, the effects of selected pretreatment methods, i.e.; soaking in citric acid, blanching in water as well as in citric acid, on the sample structure and subsequent microwave-assisted extraction (MAE) were investigated; carrots and β-carotene (as well as carotenoids) were selected as the test material and bioactive compound, respectively. A suitable condition to extract β-carotene in terms of the microwave power and extraction time was determined. Comparison between MAE and Soxhlet extraction was also made. At the optimized condition the contents of β-carotene and total carotenoids extractable from carrots blanched in water (29.74 and 58.04 mg/100 g dry basis) and in citric acid (32.08 and 61.62 mg/100 g dry basis) were significantly higher than those from the untreated carrots (23.26 and 51.79 mg/100 g dry basis). The antioxidant activities of the extracts obtained from carrots blanched in water and in citric acid were also higher than that from carrots with no pretreatment. Comparison between MAE and Soxhlet extraction revealed that the extract from MAE contained lower amounts of β-carotene and total carotenoids and exhibited lower antioxidant activity; the required MAE time was significantly shorter, however. © 2012 Elsevier Ltd. All rights reserved.

คำสำคัญ

Acid pretreatment, Blanching, carotenoids, Optimization, soaking