PMID- 27565298
OWN - NLM
STAT- MEDLINE
DCOM- 20170317
LR  - 20181202
IS  - 1879-0003 (Electronic)
IS  - 0141-8130 (Linking)
VI  - 93
IP  - Pt A
DP  - 2016 Dec
TI  - Sequential ultrasound-microwave assisted acid extraction (UMAE) of pectin from 
      pomelo peels.
PG  - 426-435
LID - S0141-8130(16)31330-7 [pii]
LID - 10.1016/j.ijbiomac.2016.08.065 [doi]
AB  - This study aims to optimize sequential ultrasound-microwave assisted extraction 
      (UMAE) on pomelo peel using citric acid. The effects of pH, sonication time, 
      microwave power and irradiation time on the yield and the degree of 
      esterification (DE) of pectin were investigated. Under optimized conditions of pH 
      1.80, 27.52min sonication followed by 6.40min microwave irradiation at 643.44W, 
      the yield and the DE value of pectin obtained was respectively at 38.00% and 
      56.88%. Based upon optimized UMAE condition, the pectin from microwave-ultrasound 
      assisted extraction (MUAE), ultrasound assisted extraction (UAE) and microwave 
      assisted extraction (MAE) were studied. The yield of pectin adopting the UMAE was 
      higher than all other techniques in the order of UMAE>MUAE>MAE>UAE. The pectin's 
      galacturonic acid content obtained from combined extraction technique is higher 
      than that obtained from sole extraction technique and the pectin gel produced 
      from various techniques exhibited a pseudoplastic behaviour. The morphological 
      structures of pectin extracted from MUAE and MAE closely resemble each other. The 
      extracted pectin from UMAE with smaller and more regular surface differs greatly 
      from that of UAE. This has substantiated the highest pectin yield of 36.33% from 
      UMAE and further signified their compatibility and potentiality in pectin 
      extraction.
CI  - Copyright (c) 2016 Elsevier B.V. All rights reserved.
FAU - Liew, Shan Qin
AU  - Liew SQ
AD  - Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 
      50603 Kuala Lumpur, Malaysia. Electronic address: sqliew@siswa.um.edu.my.
FAU - Ngoh, Gek Cheng
AU  - Ngoh GC
AD  - Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 
      50603 Kuala Lumpur, Malaysia. Electronic address: ngoh@um.edu.my.
FAU - Yusoff, Rozita
AU  - Yusoff R
AD  - Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 
      50603 Kuala Lumpur, Malaysia. Electronic address: ryusoff@um.edu.my.
FAU - Teoh, Wen Hui
AU  - Teoh WH
AD  - Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 
      50603 Kuala Lumpur, Malaysia. Electronic address: whteoh@um.edu.my.
LA  - eng
PT  - Journal Article
DEP - 20160824
PL  - Netherlands
TA  - Int J Biol Macromol
JT  - International journal of biological macromolecules
JID - 7909578
RN  - 89NA02M4RX (Pectins)
SB  - IM
MH  - Citrus/*chemistry
MH  - Fruit/*chemistry
MH  - *Microwaves
MH  - Pectins/*chemistry/*isolation & purification
MH  - *Ultrasonic Waves
OTO - NOTNLM
OT  - Optimization
OT  - Pectin extraction
OT  - Ultrasound-microwave assisted
EDAT- 2016/11/05 06:00
MHDA- 2017/03/18 06:00
CRDT- 2016/08/28 06:00
PHST- 2016/05/31 00:00 [received]
PHST- 2016/08/19 00:00 [revised]
PHST- 2016/08/22 00:00 [accepted]
PHST- 2016/11/05 06:00 [pubmed]
PHST- 2017/03/18 06:00 [medline]
PHST- 2016/08/28 06:00 [entrez]
AID - S0141-8130(16)31330-7 [pii]
AID - 10.1016/j.ijbiomac.2016.08.065 [doi]
PST - ppublish
SO  - Int J Biol Macromol. 2016 Dec;93(Pt A):426-435. doi: 
      10.1016/j.ijbiomac.2016.08.065. Epub 2016 Aug 24.