Characterization of magnetic nanoparticle–immobilized cellulases for enzymatic saccharification of rice straw

2020 ◽  
Author(s):  
Prabhpreet Kaur ◽  
Monica Sachdeva Taggar ◽  
Anu Kalia
Keyword(s):  
Rice Straw ◽  
Magnetic Nanoparticle ◽  
Enzymatic Saccharification

Fractionation and characterization of lignin from waste rice straw: Biomass surface chemical composition analysis

2020 ◽  
Vol 145 ◽  
pp. 795-803 ◽  
Author(s):  
Shubhangi De ◽  
Shubham Mishra ◽  
Elangovan Poonguzhali ◽  
Mathur Rajesh ◽  
Krishnamurthi Tamilarasan
Keyword(s):  
Chemical Composition ◽  
Rice Straw ◽  
Composition Analysis ◽  
Surface Chemical ◽  
Surface Chemical Composition ◽  
Chemical Composition Analysis

scholarly journals Characterization of a novel swollenin from Penicillium oxalicum in facilitating enzymatic saccharification of cellulose

2013 ◽  
Vol 13 (1) ◽  
pp. 42 ◽  
Author(s):  
Kang Kang ◽  
Shaowen Wang ◽  
Guohong Lai ◽  
Gang Liu ◽  
Miao Xing
Keyword(s):  
Enzymatic Saccharification ◽  
Penicillium Oxalicum

scholarly journals A semi-dominant mutation in OsCESA9 improves biomass enzymatic digestibility and salt tolerance by relatively remodeling cell walls in rice

2020 ◽  
Author(s):  
Yafeng Ye ◽  
Shuoxun Wang ◽  
Kun Wu ◽  
Yan Ren ◽  
Hongrui Jiang ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Plant Growth ◽  
Rice Straw ◽  
Enzymatic Saccharification ◽  
Cellulose Content ◽  
Normal Plant ◽  
Wild Type ◽  
Negative Effects ◽  
Straw Return ◽  
Almost All

Abstract Background: Cellulose synthase (CESA) mutants have potential use in straw processing due to their lower cellulose content, but almost all of the mutants exhibit defective phenotypes in plant growth and development. Balancing normal plant growth with reduced cellulose content remains a challenge, as cellulose content and normal plant growth are typically negatively correlated with one another. Result: Here, the rice (Oryza sativa) semi-dominant brittle culm (sdbc) mutant Sdbc1, which harbors a substitution (D387N) at the first conserved aspartic acid residue of OsCESA9, exhibits lower cellulose content and reduced secondary wall thickness as well as enhanced biomass enzymatic saccharification compared with the wild type (WT). Further experiments indicated that the OsCESA9D387N mutation may compete with the wild-type OsCESA9 for interacting with OsCESA4 and OsCESA7, further forming non-functional or partially functional CSCs. The OsCESA9/OsCESA9D387N heterozygous plants increase salt tolerance through scavenging and detoxification of ROS and indirectly affecting related gene expression. They also improve rice straw return to the field due to their brittle culms and lower cellulose content without any negative effects in grain yield and lodging. Conclusion: Hence, manipulation of OsCESA9D387N can provide the perspective of the rice straw for biofuels and bioproducts due to its improved enzymatic saccharification.

scholarly journals Synthesis and Characterization of Magnetic Nanoparticles (MNP) and MNP-Chitosan Composites

2019 ◽  
Author(s):  
Monica Namizie Asey ◽  
Norhaizan Mohd Esa ◽  
Che Azurahanim Che Abdullah
Keyword(s):  
Chemical Bonding ◽  
Magnetic Nanoparticle ◽  
Ftir Analysis ◽  
Optimum Size ◽  
Optimum Ratio ◽  
Anticancer Drug Delivery ◽  
The Common ◽  
Stretching Vibrations ◽  
Direct Toxicity

Coating of iron oxide nanoparticles (MNP) is the common approach to reduce the effects of direct toxicity due to the ion oxidation that lead to the damage of DNA. This study investigates the effect of different concentration of Chitosan (Cs) used to coat the magnetic nanoparticle with variation in the crystallite size, chemical bonding, changes in weight and surface morphology. From the XRD results, it shows that the sample 1MNP-1Cs has optimum size of 13.42 ± 0.01 nm. From the FTIR analysis, it is revealed that there are three types of chemical bonding that occur in the MNP-Cs composites which are stretching vibrations of C-H, N–H vibration belonging to Cs and the Fe-O bonds from the MNP. From the FESEM analysis, it is found that the MNP-Cs composites have a wellshaped with spherical in form, as well as, smooth surfaces. As for TGA, the thermal decomposition of MNP nanocomposites was based on the amount of Cs and MNP used to produce the nanocomposites. Further studies will be conducted to find the optimum ratio of MNP-Cs for anticancer drug delivery application.

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