Rice Straw (Oryza sativa L.) Biomass Conversion to Furfural, 5-Hydroxymethylfurfural, Lignin and Bio-char: A Comprehensive Solution

2021 ◽  
Author(s):  
Ajay Kumar ◽  
Arvind Singh Chauhan ◽  
Rohit Bains ◽  
Pralay Das
Keyword(s):  
Oryza Sativa ◽  
Rice Straw ◽  
Oryza Sativa L ◽  
Biomass Conversion

scholarly journals Preparation of wastelage with poultry droppings and rice straw (Oryza sativa L.) as a cattle feed

2018 ◽  
Vol 4 (3) ◽  
pp. 251-258
Author(s):  
Obydul Islam ◽  
Somaya Akter ◽  
Md Ahidul Islam ◽  
Dewan Kamruzzaman Jamee ◽  
Rokibul Islam Khan
Keyword(s):  
Organic Matter ◽  
Oryza Sativa ◽  
Rice Straw ◽  
Oryza Sativa L ◽  
Fungal Growth ◽  
Metabolizable Energy ◽  
Organic Matter Digestibility ◽  
Ph Level ◽  
Poultry Droppings

The use of poultry droppings as a feed ingredient may not only reduce waste and environmental pollution but also provide inexpensive feed components for ruminants. An experiment was conducted to prepare wastelage in the field laboratory of Animal Science Department, Bangladesh Agricultural University, Mymensingh. Rice straw (Oryza sativa L.) was mixed with 0%, 10%, 20% and 30% caged layer excreta (CLE) and 5% molasses in each treatment on dry matter (DM) basis and ensiled in air tight container under room temperature. After 60 days, ensiled mixture was opened. All the wastelage had desirable smell, light brownish color, soft texture and no fungal growth was found. Results revealed that PH, DM, crude protein (CP), crude fiber (CF), ash, in vitro organic matter digestibility and metabolizable energy were significantly (p<0.05) influenced by different levels of CLE. The highest CP (5.97g/100g DM) was observed in wastelage with 30% CLE (p<0.05) followed by 20% and 10% CLE. The PH level, DM, Ash and CF contents were decreased linearly (p<0.05) from 4.8 to 4.11, 78.00 to 55.63, 25.08 to 17.70 and 22.57 to 14.95%, respectively as the level of CLE increased from 0 to 30%. In all treatments, EE content was not significantly influenced by the different level of CLE. The in vitro organic matter digestibility (IVOMD) and metabolizable energy (ME) also increased significantly (p<0.05) with the increased level of CLE and maximum value (57.51%, and 8.12 MJ/Kg DM, respectively) was obtained in wastelage with 10% CLE, which is statistically identical with 20% CLE. Therefore, it could be speculated that ensiling rice straw with up to 20% CLE improved the feeding value of wastelage.Asian J. Med. Biol. Res. September 2018, 4(3): 251-258

scholarly journals Structural Characteristics of the Guaiacyl-Rich Lignins From Rice (Oryza sativa L.) Husks and Straw

2021 ◽  
Vol 12 ◽  
Author(s):  
Mario J. Rosado ◽  
Jorge Rencoret ◽  
Gisela Marques ◽  
Ana Gutiérrez ◽  
José C. del Río
Keyword(s):  
Oryza Sativa ◽  
Rice Straw ◽  
Oryza Sativa L ◽  
Structural Characteristics ◽  
Analytical Techniques ◽  
Gas Chromatography Mass Spectrometry ◽  
Aryl Ether ◽  
Rice Husks ◽  
Alkyl Aryl ◽  
G Ratio

Rice (Oryza sativa L.) is a major cereal crop used for human nutrition worldwide. Harvesting and processing of rice generates huge amounts of lignocellulosic by-products such as rice husks and straw, which present important lignin contents that can be used to produce chemicals and materials. In this work, the structural characteristics of the lignins from rice husks and straw have been studied in detail. For this, whole cell walls of rice husks and straw and their isolated lignin preparations were thoroughly analyzed by an array of analytical techniques, including pyrolysis coupled to gas chromatography-mass spectrometry (Py-GC/MS), nuclear magnetic resonance (NMR), and derivatization followed by reductive cleavage (DFRC). The analyses revealed that both lignins, particularly the lignin from rice husks, were highly enriched in guaiacyl (G) units, and depleted in p-hydroxyphenyl (H) and syringyl (S) units, with H:G:S compositions of 7:81:12 (for rice husks) and 5:71:24 (for rice straw). These compositions were reflected in the relative abundances of the different interunit linkages. Hence, the lignin from rice husks were depleted in β–O–4′ alkyl-aryl ether units (representing 65% of all inter-unit linkages), but presented important amounts of β–5′ (phenylcoumarans, 23%) and other condensed units. On the other hand, the lignin from rice straw presented higher levels of β–O–4′ alkyl-aryl ethers (78%) but lower levels of phenylcoumarans (β–5′, 12%) and other condensed linkages, consistent with a lignin with a slightly higher S/G ratio. In addition, both lignins were partially acylated at the γ-OH of the side-chain (ca. 10–12% acylation degree) with p-coumarates, which overwhelmingly occurred over S-units. Finally, important amounts of the flavone tricin were also found incorporated into these lignins, being particularly abundant in the lignin of rice straw.

scholarly journals Arsenic in rice and rice straw

2012 ◽  
Vol 29 (1) ◽  
pp. 1-6 ◽  
Author(s):  
S Chakma ◽  
M M Rahman ◽  
P Islam ◽  
M A Awal ◽  
U K Roy ◽  
...  
Keyword(s):  
Drinking Water ◽  
Oryza Sativa ◽  
Atomic Absorption ◽  
Rice Straw ◽  
Flow Injection ◽  
Maximum Permissible Concentration ◽  
Oryza Sativa L ◽  
Arsenic Concentration ◽  
Atomic Absorption Spectrophotometer ◽  
Aas Method

Arsenic from groundwater affects people in Bangladesh via seed grains and forages. Samples of rice (Oryza sativa L) and rice straw were collected from arsenic-contaminated areas and arsenic concentration was measured using Flow Injection Hidride Generator Atomic Absorption Spectrophotometer (FI-HG-AAS) method. The concentrations in rice and rice straw were 0.235 ± 0.014 ppm (n = 48) and 1.149 ± 0.119 ppm (n = 51), respectively. Both were greater than the maximum permissible concentration in drinking water (0.05 ppm; WHO). DOI: http://dx.doi.org/10.3329/bvet.v29i1.11883 Bangl. vet. 2012. Vol. 29, No. 1, 1-6 

scholarly journals Pemanfaatan Jerami Padi (Oryza Sativa L.) Sebagai Bahan Baku Dalam Pembuatan CMC (Carboximetil Cellulose)

2021 ◽  
Vol 15 (2) ◽  
pp. 194
Author(s):  
RIZKA NURLAILA
Keyword(s):  
Oryza Sativa ◽  
Reaction Time ◽  
Rice Straw ◽  
Carboxymethyl Cellulose ◽  
Oryza Sativa L ◽  
Raw Material ◽  
Cellulose Content ◽  
Cosmetic Products ◽  
High Cellulose

Rice straw is a waste from rice plants that contains 37.71% cellulose, 21.99% hemicellulose, and 16.62% lignin. High cellulose content in rice straw can be used as raw material for the manufacture of Carboxymethyl Cellulose (CMC). CMC is a cellulose derivative widely used in food, pharmaceutical, detergent, textile and cosmetic products industries as a thickener, stabilizer of emulsions, or suspensions and bonding. This study aims to process rice straw waste into CMC with variations in sodium monochloroacetate of 5,6,7,8 and 9 grams. The method used in this research is by synthesis using 15% NaOH solvent, with a reaction time of 3.5 hours and 5 grams of rice straw. The results showed that the best CMC was obtained at a concentration of 9 grams of sodium monochloroacete with a yield characterization of 94%, pH 6, water content of 13.39%, degree of substitution (Ds) of 0.80, and viscosity of 1.265 cP.

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