scholarly journals Exploration of a high-efficiency and low-cost technique for maximizing the glucoamylase production from food waste

RSC Advances ◽  
2019 ◽  
Vol 9 (40) ◽  
pp. 22980-22986 ◽  
Author(s):  
Shujuan Meng ◽  
Yao Yin ◽  
Liu Yu
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Food Waste ◽  
High Efficiency ◽  
Low Cost ◽  
Fermentation Conditions ◽  
Glucoamylase Production

Remarkably high glucoamylase production from food waste was achieved by optimizing the fermentation conditions using the response surface methodology.

scholarly journals Optimization of methanol crystallization for highly efficient separation of palmitic acid from palm fatty acid mixture using response surface methodology

2018 ◽  
Vol 68 (4) ◽  
pp. 224 ◽  
Author(s):  
A. A.W. Japir ◽  
J. Salimon ◽  
D. Derawi ◽  
B. H. Yahaya ◽  
M. S.M. Jamil ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Fatty Acid ◽  
Palmitic Acid ◽  
Response Surface ◽  
High Efficiency ◽  
Low Cost ◽  
Methyl Esters ◽  
Acid Mixture ◽  
Crystallization Time ◽  
Crystallization Method

The objective of the current study was to develop parameters for the separation of palmitic acid (PA) from a crude palm oil saturated fatty acid (SFAs) mixture by using the methanol crystallization method. The conditions of methanol crystallization were optimized by the response surface methodology (RSM) with the D-optimal design. The procedure of developing the solvent crystallization method was based on various different parameters. The fatty acid composition was carried out using a gas chromatography flame ionization detector (GC-FID) as fatty acid methyl esters. The highest percentage of SFAs was more than 96% with the percentage yield of 87.5% under the optimal conditions of fatty acids-to-methanol ratio of 1: 20 (w/v), the crystallization temperature of -15 °C, and the crystallization time of 24 hours, respectively. The composition of separated SFAs in the solid fraction contains 96.7% of palmitic acid (C16:0) as a dominant component and 3.3% of stearic acid (C18:0). The results showed that utilizing methanol as a crystallization solvent is recommended because of its high efficiency, low cost, stability, availability, comparative ease of recovery and its ability to form needle-like crystals which have good filtering and washing characteristics.

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