Optimization studies on acid hydrolysis of oil palm empty fruit bunch fiber for production of xylose

2007 ◽  
Vol 98 (3) ◽  
pp. 554-559 ◽  
Author(s):  
S.H.A. Rahman ◽  
J.P. Choudhury ◽  
A.L. Ahmad ◽  
A.H. Kamaruddin
Keyword(s):  
Acid Hydrolysis ◽  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Hydrolysis Of

A Kinetic Study on Acid Hydrolysis of Oil Palm Empty Fruit Bunch Fibers Using a Microwave Reactor System

2014 ◽  
Vol 28 (4) ◽  
pp. 2589-2597 ◽  
Author(s):  
Siew Xian Chin ◽  
Chin Hua Chia ◽  
Zhen Fang ◽  
Sarani Zakaria ◽  
Xing Kang Li ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Acid Hydrolysis ◽  
Oil Palm ◽  
Reactor System ◽  
Empty Fruit Bunch ◽  
Microwave Reactor ◽  
Hydrolysis Of

Optimization Studies on Acid Hydrolysis of Pretreated Oil Palm Empty Fruit Bunch for Production of Xylose by Application of Response Surface Methodology

2013 ◽  
Vol 699 ◽  
pp. 77-82 ◽  
Author(s):  
S. Duangwang ◽  
C. Sangwichien
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Acid Hydrolysis ◽  
Response Surface ◽  
Reaction Temperature ◽  
Oil Palm ◽  
Temperature Reaction ◽  
Empty Fruit Bunch ◽  
H2so4 Concentration ◽  
Hydrolysis Of

Oil palm empty fruit bunch is a lignocellulosic material from palm oil plantations. It is a potential source of xylose which can be used as a raw material for production of xylitol. Using of lignocellulosic waste for bioconversion to fuels and chemicals is justifiable as these materials are low cost, renewable and widespread sources of sugars. The objective of the present study was to determine the effect of H2SO4 concentration, reaction temperature and reaction time for acid hydrolysis of pretreated OPEFB, pretreated OPEFB with reaction temperature, reaction time and NaOH concentration were 130 °C, 40 min and 15% (w/v), respectively to achieve high xylose yield. Batch reactions were carried out under various reaction temperature, reaction time and H2SO4 concentration. Response Surface Methodology (RSM) was followed to optimize acid hydrolysis in order to obtain high yield of xylose. The optimum reaction temperature, reaction time and H2SO4 concentration were found to be 140 °C, 90 min and 7% (w/v), respectively. The maximum value of xylose was obtained 56.39 g/l by using the above condition. The best result of xylose yield obtained was 126%.

scholarly journals Effect of ultrasonic pre-treatment on low temperature acid hydrolysis of oil palm empty fruit bunch

2010 ◽  
Vol 101 (24) ◽  
pp. 9792-9796 ◽  
Author(s):  
Robiah Yunus ◽  
Shanti Faridah Salleh ◽  
Nurhafizah Abdullah ◽  
Dyg Radiah Awg Biak
Keyword(s):  
Low Temperature ◽  
Acid Hydrolysis ◽  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Pre Treatment ◽  
Hydrolysis Of

Efficient of Acid Hydrolysis of Oil Palm Empty Fruit Bunch Residues for Xylose and Highly Digestible Cellulose Pulp Productions

2017 ◽  
Vol 9 (11) ◽  
pp. 2041-2051 ◽  
Author(s):  
Tanya Thamsee ◽  
Benjamas Cheirsilp ◽  
Ram Yamsaengsung ◽  
Taweesak Ruengpeerakul ◽  
Saovanee Choojit ◽  
...  
Keyword(s):  
Acid Hydrolysis ◽  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Cellulose Pulp ◽  
Hydrolysis Of

scholarly journals Ultrasound-Assisted Extraction of Polyphenolic Contents and Acid Hydrolysis of Flavonoid Glycosides from Oil Palm (Elaeis guineensis Jacq.) Leaf: Optimization and Correlation with Free Radical Scavenging Activity

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1540
Author(s):  
Mohamad Shazeli Che Zain ◽  
Nurul Azani Jakariah ◽  
Jen Xen Yeoh ◽  
Soo Yee Lee ◽  
Khozirah Shaari
Keyword(s):  
Free Radical ◽  
Acid Hydrolysis ◽  
Oil Palm ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Free Radical Scavenging Activity ◽  
Flavonoid Glycosides ◽  
Scavenging Activity ◽  
Hydrolysis Of

Malaysia is ranked as the second largest oil palm producer in the world after Indonesia. This leads to the generation of large quantities of oil palm (Elaeis guineensis Jacq.) leaves (OPLs) annually, considered an underutilized oil palm biomass with low economical value. The present study aimed to study the effects of several parameters of ultrasound-assisted extraction (UAE) and the acid hydrolysis of phenolic compounds from OPLs using the single factor experimental approach. The effects of different solvents (hexane, ethyl acetate, 1:1 methanol–ethyl acetate, absolute methanol, and 4:1 methanol–water), solid–liquid ratios (1:20, 1:40, 1:50, 1:60, and 1:70), times (0.5, 1, 2, 3, and 5 h), and temperatures (25, 30, 40, 60, and 70 °C) were investigated for UAE. Moreover, the effects of acid concentration (0.2, 1, 2, 4, 6, and 12 M), incubation time (10, 30, 45, 60, and 90 min), and incubation temperature (65, 75, 85, 90, and 95 °C) on the acid hydrolysis of flavonoid glycosides were also determined. The results revealed that some of the tested parameters had prominent effects on the total phenolic (TPC) and total flavonoid (TFC) contents, as well as the DPPH free radical scavenging activity recovered from the OPLs. The optimal UAE conditions were determined to be 0.5 h at 25 °C using 4:1 methanol–water and 1:50 solid–liquid ratio, producing OPL extracts with TPC and TFC at 335.30 and 60.67 milligrams quercetin equivalents per gram of extract (mg QCE/g extract), respectively, and DPPH free radical scavenging activity at 94.06%. The phenolics present in OPLs were optimally hydrolysed using 6 M hydrochloric acid with an incubation period of 45 min at 95 °C with TPC, TFC, and DPPH free radical scavenging activity at 126.33 milligrams gallic acid equivalents per gram of extract (mg GAE/g extract), 36.08 mg QCE/g, and 54.88%, respectively. Moreover, acid hydrolysis managed to optimally recover the total apigenin content (TAC), total luteolin content (TLC), and total flavonoid C-glycoside content (TFCGC) with values of 79.12 micrograms vitexin equivalents per milligram of extract (µg VE/mg extract), 20.97 micrograms orientin equivalents per milligram of extract (µg OE/mg extract), and 100.09 µg/mg, respectively. Additionally, there were significant correlations between the polyphenolic compounds, flavonoid C-glycosides, and antioxidant activity for all parameters based on the Pearson correlation analysis. This indicates that OPLs have potential as a natural source of phenolic compounds, especially flavonoid C-glycosides, with beneficial free radical scavenging activity that can be incorporated in food and pharmaceutical products.

scholarly journals Low-Temperature Dilute Acid Hydrolysis of Oil Palm Frond

2014 ◽  
Vol 202 (9) ◽  
pp. 1235-1244 ◽  
Author(s):  
Hadi Amirkhani ◽  
Robiah Yunus ◽  
Umer Rashid ◽  
Shanti Faridah Salleh ◽  
A. B. Dayang Radhiah ◽  
...  
Keyword(s):  
Low Temperature ◽  
Acid Hydrolysis ◽  
Oil Palm ◽  
Dilute Acid ◽  
Dilute Acid Hydrolysis ◽  
Oil Palm Frond ◽  
Hydrolysis Of ◽  
Palm Frond

scholarly journals Characterization of Residual Lignin Obtained by the Enzymatic Hydrolysis of Oil Palm Empty Fruit Bunch Pulps

BioResources ◽  
2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Yin Ying H'ng ◽  
Akiko Nakagawa-Izumi ◽  
Cheu Peng Leh ◽  
Atanu Kumar Das ◽  
Hiroshi Ohi
Keyword(s):  
Enzymatic Hydrolysis ◽  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Residual Lignin ◽  
Hydrolysis Of
Sign in / Sign up

Export Citation Format

Share Document