Sugar and Bioethanol Production from Oil Palm Trunk (OPT)

Hossain, Nazia; Jalil, Rafidah

doi:10.18034/apjee.v4i1.237

Cited by 12 publications

(9 citation statements)

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“…It was concluded that the saccharification had decreased with certain timeperiod and the experiment was not continued further after day 7. This study was a continuation of that of Hossain and Jalil (2015). According to Hossain and Jalil (2015), from day 1 to day 4, the saccharification rate for OPT increased continuously while this study has extended this finding identifying the further saccharification until day 10 (shown in Table 2) and day 7 (shown in Table 3).…”

Section: Resultssupporting

confidence: 52%

“…This study was a continuation of that of Hossain and Jalil (2015). According to Hossain and Jalil (2015), from day 1 to day 4, the saccharification rate for OPT increased continuously while this study has extended this finding identifying the further saccharification until day 10 (shown in Table 2) and day 7 (shown in Table 3). The previous study outlined the increased OPT saccharification rate from day 1 to 4 for both samples, with and without supplements.…”

Section: Resultssupporting

confidence: 52%

“…Usually invertase works as a starchdegrading and sucrose-metabolizing enzyme; it is easily available and cheap to buy. Apart from the hydrolysis time factor, saccharification in the OPT sap also takes place by the induction of invertase triggered by various types of stress such as osmotic stress, water stress and cold stress (Yamada et al, 2010;Hossain & Jalil, 2015). Table 2 also demonstrates that sugar accumulation was 12.52% at initial stage (day 1) and it continuously improved with the hydrolysis time.…”

Section: Resultsmentioning

confidence: 93%

“…After cellulosic hydrolysis (enzymatic reaction) of OPT by invertase (Saccharomyces cerevisiae containing enzyme), hexoses (n=6) such as glucose and fructose are produced which are easily fermentable (simple) sugars and could be either a source of free sugar (a food substance) after certain seperation and purification processes or a source of raw materials for bioethanol production. Besides saccharification, fermentation can be continued in the process, and with the increased enzymatic hydrolysis period, bioethanol production can also be increased (with or without supplements) with sugar increase (Hossain & Jalil, 2015). Almost 20% of OPT contains an average content of pentoses (n=5) such as xylose, arabinose, arabitol and others.…”

Section: Resultsmentioning

confidence: 99%

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The Efficacy of the Period of Saccharification on Oil Palm (Elaeis guineensis) Trunk Sap Hydrolysis

Hossain¹,

Zaini²,

Jalil³

et al. 2018

IJTech

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This study investigates the enzymatic hydrolysis rate of Oil Palm (Elaeis guineensis) Trunk (OPT) sap in terms of the length of saccharification process with the aim to elevate sugar production. Emphasis was placed on the reaction time and addition of supplements such epsom salt (MgSO4) and alanine amino acid (C3H7NO2) to accelerate the efficiency of Saccharomyces cerevisiae containing the enzyme invertase. A whole oil palm trunk was divided into four different sections, upper, middle-1, middle-2 and bottom with separate experiments over 10 days enzymatic reaction period. The highest saccharification rate was shown as 13.47% on the tenth day. This result indicates that the increase in the saccharification rate was positively correlated with the length of hydrolysis. Moreover, the sample with nutrients achieved the highest sugar output, 17.91% on the fourth day of hydrolysis which was 4.44% higher than the hydrolysis rate of the sample without nutrients. In the presence of complex OPT sugars, together with other essential elements, epsom salt and alanine amino acid, S.cerevisiae achieved a higher hydrolysis metabolism to simple sugars as the cells strived to produce energy and regenerated the invertase. Moreover, the upper part of the OPT rendered the highest potential for sugar production with levels of 21.2% with supplements and 15.6% without. From this experimental analysis, a conventional saccharification method was optimized through the addition of nutrients and a prolonged (10 days) hydrolysis process which yielded an increase in sugar production.

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Section: Resultssupporting

confidence: 52%

Section: Resultssupporting

confidence: 52%

Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

The Efficacy of the Period of Saccharification on Oil Palm (Elaeis guineensis) Trunk Sap Hydrolysis

Hossain¹,

Zaini²,

Jalil³

et al. 2018

IJTech

Self Cite

View full text Add to dashboard Cite

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“…Most of the kitchen waste was similar feedstock to lignocellulosic raw materials, which is considered to be an excellent substrate 22 . Previous works delineated the pathway of converting plant-based waste biomass to bioethanol, in which enzyme pretreatment was conducted before yeast fermentation [23][24][25][26] . Gnansounou & Dauriat produced 30.9 g bioethanol and 65.2 L biogas using 1 kg of kitchen waste 27 .…”

Section: Discussionmentioning

confidence: 99%

Bioethanol fermentation from kitchen waste using Saccharomyces cerevisiae

2018

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Bioethanol obtained from microbial fermentation can replace conventional fossil fuels to satisfy energy demand. In this respect, a fermenting isolate of Saccharomyces cerevisiae, obtained from date juice, was grown in YEPD medium as a part of a previous published research project. In this study, the isolate was tentatively characterized for alcoholic fermentation in organic kitchen waste medium, prepared from discarded fruit and vegetable peels. Fermentation in shaking condition resulted in the production of 7.3% (v/v) ethanol after 48 h, after which the pH of the medium increased slightly in response. Further research should be conducted to assess the potential of kitchen waste as a raw material in ethanol fermentation.

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Techno‐economics and Sensitivity Analysis of Microalgae as Commercial Feedstock for Bioethanol Production

Hossain

Mahlia

Zaini

et al. 2019

Env Prog and Sustain Energy

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The foremost purpose of this techno‐economic analysis (TEA) modeling was to predict a harmonized figure of comprehensive cost analysis for commercial bioethanol generation from microalgae species in Brunei Darussalam based on the conventional market scenario. This model was simulated to set out economic feasibility and probabilistic assumption for large‐scale implementations of a tropical microalgae species, Chlorella vulgaris, for a bioethanol plant located in the coastal area of Brunei Darussalam. Two types of cultivation systems such as closed system (photobioreactor—PBR) and open pond approaches were anticipated for a total approximate biomass of 220 t year−1 on 6 ha coastal areas. The biomass productivity was 56 t ha−1 for PBR and 28 t ha−1 for pond annually. The plant output was 58.90 m3 ha−1 for PBR and 24.9 m3 ha−1 for pond annually. The total bioethanol output of the plant was 57,087.58 gal year−1 along with the value added by‐products (crude bio‐liquid and slurry cake). The total production cost of this project was US$2.22 million for bioethanol from microalgae and total bioethanol selling price was US$2.87 million along with the by‐product sale price of US$1.6 million. A sensitivity analysis was conducted to forecast the uncertainty of this conclusive modeling. Different data sets through sensitivity analysis also presented positive impacts of economical and environmental views. This TEA model is expected to be initialized to determine an alternative energy and also minimize environmental pollution. With this current modeling, microalgal‐bioethanol utilization mandated with gasoline as well as microalgae cultivation, biofuel production integrated with existing complementary industries, are strongly recommended for future applications. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Sugar and Bioethanol Production from Oil Palm Trunk (OPT)

Cited by 12 publications

References 1 publication

The Efficacy of the Period of Saccharification on Oil Palm (Elaeis guineensis) Trunk Sap Hydrolysis

The Efficacy of the Period of Saccharification on Oil Palm (Elaeis guineensis) Trunk Sap Hydrolysis

Bioethanol fermentation from kitchen waste using Saccharomyces cerevisiae

Techno‐economics and Sensitivity Analysis of Microalgae as Commercial Feedstock for Bioethanol Production

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