scholarly journals Optimum Temperature and Time for Acid Hydrolysis in Reducing Sugar Manufacturing from Arabica Coffee Cascara with Response Surface Methodology (RSM)

2021 ◽  
Vol 3 (2) ◽  
pp. 163
Author(s):  
S Suryati ◽  
M Meriatna ◽  
M Masrullita ◽  
Ferri Safriwardy ◽  
Ardiansyah Ardiansyah
Keyword(s):  
Response Surface Methodology ◽  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Response Surface ◽  
Reducing Sugar ◽  
Sugar Production ◽  
Optimum Temperature ◽  
Percentage Density ◽  
Arabica Coffee ◽  
Time Required

This research aims to utilize the Arabica coffee cascara waste as a resource for reducing sugar production, including the investigation on the temperature and time required of the acid hydrolysis. The samples were initially pretreated (drying and milling), followed by delignification with the organosolv technique using alcohol. Then, the hydrolysis was carried out using sulfuric acid (1%) at a particular temperature (95, 100, and 105 °C) and time (2, 4, and 6 h) variations. Yield percentage, density, and reducing concentration were analyzed in each trial to generate a response surface methodology model. Based on the results, the hydrolysis can be optimized at 96.46 °C for 2.59 h, yielding 16.7696% reducing sugar.

scholarly journals Optimization of Reducing Sugar Production from Manihot glaziovii Starch Using Response Surface Methodology

Energies ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 35 ◽  
Author(s):  
Abdi Sebayang ◽  
Masjuki Hassan ◽  
Hwai Ong ◽  
Surya Dharma ◽  
Arridina Silitonga ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Reducing Sugar ◽  
Sugar Production ◽  
Manihot Glaziovii

scholarly journals Acid hydrolysis optimization of cocoa pod shell using response surface methodology approach toward ethanol production

2018 ◽  
Vol 52 (6) ◽  
pp. 581-587
Author(s):  
Vinayaka B. Shet ◽  
Nisha sanil ◽  
Manasa Bhat ◽  
Manasa Naik ◽  
Leah Natasha Mascarenhas ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Ethanol Production ◽  
Acid Hydrolysis ◽  
Response Surface

scholarly journals OPTIMASI SUHU DAN WAKTU MENGGUNAKAN RESPONSE SURFACE METHODOLOGY (RSM) PADA EKSTRAKSI OLEORESIN LIMBAH KULIT JERUK LEMON (Citrus limon (Linn.) Burm.F.) DENGAN BANTUAN GELOMBANG ULTRASONIK

2018 ◽  
Vol 7 (3) ◽  
pp. 110
Author(s):  
I Gede Arie Mahendra Putra ◽  
I Wayan Rai Widarta ◽  
Putu Timur Ina
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Decanoic Acid ◽  
Extraction Process ◽  
Ultrasonic Waves ◽  
Citrus Limon ◽  
Optimum Temperature ◽  
Octadecanoic Acid ◽  
Lemon Peel ◽  
Geranyl Propionate

This study was aimed to determine the optimum temperature and extraction time of citrus lemon peel (Citrus limon (Linn.) Burm.F.) oleoresins by using Response Surface Methodology (RSM). The results showed that the optimum temperature and time of extraction with ultrasonic waves to produced oleoresins were 59,28ºC and 72,57 minutes. The extraction process with optimum temperature and time produced citrus lemon peel oleoresin with yield and refractive index respectively 32,47% and 1,4923. Meanwhile, the value of the density is equal to 1,3740 g/cm3 and the chemical compound was identified by GC-MS instrument. The component that was found in the citrus lemon peel oleoresin were 1-propanone, 1,3,6 Octratriene, Propanoic Acid, 2-Furancarboxaldehyde, 4-Vinyl-2-Methoxy-Phenol, 1-Pentene, Neryl Acetate, Geranic Acetate, ?-Bergamotene, Limonene, 2-Hexenal, 2-Bornanone, 2-Decyn-1-ol, Methyl Eugenol, Cis-P-Mentha-1(7),8-dien-2-ol, 1,4 Naphthalendione, Undecanal, Octadecanoic Acid, Pentadecanoic Acid, Decanoic Acid, 11-Octadecanoic Acid,GeranylButirate, Geranyl Propionate and 1,2-Benzenedicarboxylic Acid.

scholarly journals Optimization of Xylose Production from Sugarcane Trash by Microwave-Maleic Acid Hydrolysis

REAKTOR ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 81-88
Author(s):  
Euis Hermiati ◽  
Maulida Oktaviani ◽  
Riksfardini Annisa Ermawar ◽  
Raden Permana Budi Laksana ◽  
Lutfi Nia Kholida ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Acid Hydrolysis ◽  
Response Surface ◽  
Acid Concentration ◽  
Maleic Acid ◽  
Sugar Alcohol ◽  
Quadratic Regression ◽  
Microwave Assisted ◽  
Concentration Time ◽  
Xylose Production

Sugarcane trash contains significant amount of xylan that could be hydrolysed to xylose. The xylose could be further fermented to produce xylitol, a sugar alcohol that has low calories and does not cause carries of teeth. In this study we optimized the production of xylose from sugarcane trash by microwave-assisted maleic acid hydrolysis using response surface methodology (RSM). The factors optimized were acid concentration, time, and temperature. The xylose yield based on the weight of initial biomass was determined and it served as a response variable. Results show that acid concentration and interaction between time and temperature had significant effect on xylose yield. The quadratic regression model generated from the optimization was fit and can be used to predict the xylose yield after hydrolysis with various combinations of acid concentration, time, and temperature. The optimum condition for xylose production from sugarcane trash was using maleic acid of 1.52%, and heating at 176 °C for 6.8 min. At this condition the yield of xylose was 24.3% per initial biomass or 0.243 g/ g biomass.Keywords: maleic acid; microwave heating; response surface methodology; sugarcane trash, xylose

Preparation of Activated Carbon from Formic Acid Hydrolysis Residue by Chemical Activation of ZnCl2

2013 ◽  
Vol 860-863 ◽  
pp. 527-533
Author(s):  
Zhen Wu ◽  
Yong Sun ◽  
Lei Hu ◽  
Ning Xu ◽  
Ben Lin Dai
Keyword(s):  
Response Surface Methodology ◽  
Activated Carbon ◽  
Formic Acid ◽  
Acid Hydrolysis ◽  
Wheat Straw ◽  
Response Surface ◽  
Reaction Temperature ◽  
Preparation Conditions ◽  
Formic Acid Hydrolysis ◽  
Hydrolysis Residue

Utilization of wheat straw for bio-based chemicals production is a research focus. In this work, experiments were conducted to study the preparation conditions of activated carbon from formic acid hydrolysis residue of wheat straw applying response surface methodology. The effects of activation reaction temperature, retention time and activator quantity on the decolorizing capacity of activated carbon were dealt with in this paper. Optimal preparation conditions were abtained by response surface methodology as followed: the content of ZnCl2 solution was 14.2%, reaction temperature was 798°C and retained time was 30 mins with a decolorizing capacity of 15.8 mL methylene blue. Results indicated that the technology was available.

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