FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (12): 71-75.doi: 10.7506/spkx1002-6630-201012016

• Technology Application • Previous Articles     Next Articles

Optimization of Some Process Conditions for the Alkline Extraction of Phenolic Acids from Bamboo Residues by Response Surface Methodology

HU Zheng-rong1,2，LIU Yu-huan1,2,3， RUAN Roger1,2,*，PENG Hong1,2，ZHANG Jin-sheng1,2   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China；2. Engineering
    Research Center for Biomass Conversion, Minister of Education, Nanchang University, Nanchang 330047, China；3. Engineering
    and Technology Research Center for Biomass Conversion of Jiangxi Province, Nanchang University, Nanchang 330047, China
  • Received:2009-09-23 Revised:2010-02-03 Online:2010-06-15 Published:2010-12-29
  • Contact: RUAN Roger E-mail:nhgsypszdmj@yahoo.com.cn

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Abstract:

This study aimed at developing an optimal process for the alkine extraction of phenolic acids from bamboo residues. To investigate the effects of hydrolysis temperature, length of hydrolysis time and NaOH concentration as well as their pairwise interactions on the yield of phenolic acids from bamboo residues, the use of Box-Behnken design combined with response surface methodology was evaluated. The results showed that the optimum values of the above process conditions were determined to be: NaOH concentration 1.65% for a hydrolysis duration of 190 min at 75.5 ℃. Under such conditions, the yield of ferulic acid belonging to the group of phenolic acids was determined by means of UV spectroscopy (at 320 nm) to be 29.2503mg/g, very consistent with the theoretical prediction of 29.9566 mg/g. Added antioxidants to the alkine hydrolysis system was able to reduce loss of ferulic acid caused by oxidation. In conclusion, the developed process is applicable.

Key words: bamboo residues, phenolic acid, ferulic acid, extraction, response surface methodology

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