Bioresource Upgrade for Sustainable Energy, Environment, and Biomedicine

Li, Fanghua; Li, Yiwei; Новоселов, К. С.; Li, Feng; Meng, Jiashen; Ho, Shih‐Hsin; Tong, Zhao; Zhou, Hui; Ahmad, Awais; Zhu, Yinlong; Hu, Liangxing; Ji, Dongxiao; Jia, Litao; Li, Rui; Ramakrishna, Seeram

doi:10.1007/s40820-022-00993-4

Cited by 30 publications

(15 citation statements)

References 310 publications

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“…The reductions in the percentages of lignin and hemicellulose in tCPH are indicators of hydrolysis’s effectiveness and are important because some studies show that if considerable amounts of lignin and hemicellulose are removed from a fiber, the hydroxyl groups present in the cellulose can form hydrogen bonds. This improves the mechanical properties of the treated fiber [ 52 , 53 ], and in turn, is an advantage if tCPH is to be incorporated as a reinforcement in polymeric matrices.…”

Section: Resultsmentioning

confidence: 99%

Isolation and Characterization of Cellulose Microfibers from Colombian Cocoa Pod Husk via Chemical Treatment with Pressure Effects

et al. 2023

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One of the current challenges is to add value to agro-industrial wastes, and the cocoa industry generates about 10 tons of cocoa pod husks in Colombia for each ton of cocoa beans, which are incinerated and cause environmental damage. This study characterized the Colombian cocoa pod husk (CPH) and to isolate and characterize cellulose microfibers (tCPH) extracted via chemical treatment and pressure. Chemical and physical analyses of CPH were performed, and a pretreatment method for CPH fibers was developed, which is followed by a hydrolysis method involving high pressure in an autoclave machine with an alkaline medium (6% NaOH), and finally, bleaching of the fiber to obtain tCPH. The tCPH cellulose microfibers were also chemically and physically analyzed and characterized by infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermo-gravimetric analysis (TGA). Chemical and physical characterization showed a decrease in lignin content in tCPH. FTIR analysis showed the absence of some peaks in tCPH with respect to the CPH spectrum; XRD results showed an increase in crystallinity for tCPH compared to CPH, due to a higher presence of crystalline cellulose in tCPH. SEM images included a control fiber treated without high pressure (tCPHnpe), and agglomerated fibers were observed, whereas cellulose microfibers with a mean diameter of 10 ± 2.742 μm were observed in tCPH. Finally, with TGA and DTGA it was confirmed that in tCPH, the hemicellulose and lignin were removed more successfully than in the control fiber (tCPHnpe), showing that the treatment with pressure was effective at isolating the cellulose microfibers from cocoa pod husk.

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Section: Resultsmentioning

confidence: 99%

Isolation and Characterization of Cellulose Microfibers from Colombian Cocoa Pod Husk via Chemical Treatment with Pressure Effects

et al. 2023

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“…We can distinguish dead cells from living cells based on morphological differences between cells. Based on the morphological differences between dead and living cells, a cell classification network based on the neural network , was established to assess the cell viability of the samples. The cell viability curve of the same sample assessed by CCN remained unchanged after 2300 s (38 min 20 s), indicating that all cells in the sample were moribund or completely dead (Figure b).…”

Section: Resultsmentioning

confidence: 99%

Deep-Learning Terahertz Single-Cell Metabolic Viability Study

Yang,

Shi,

Wei

et al. 2023

ACS Nano

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Cell viability assessment is critical, yet existing assessments are not accurate enough. We report a cell viability evaluation method based on the metabolic ability of a single cell. Without culture medium, we measured the absorption of cells to terahertz laser beams, which could target a single cell. The cell viability was assessed with a convolution neural classification network based on cell morphology. We established a cell viability assessment model based on the THz-AS (terahertz-absorption spectrum) results as y = a = (x – b) c , where x is the terahertz absorbance and y is the cell viability, and a, b, and c are the fitting parameters of the model. Under water stress the changes in terahertz absorbance of cells corresponded one-to-one with the apoptosis process, and we propose a cell 0 viability definition as terahertz absorbance remains unchanged based on the cell metabolic mechanism. Compared with typical methods, our method is accurate, label-free, contact-free, and almost interference-free and could help visualize the cell apoptosis process for broad applications including drug screening.

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“…Considering that there are simple isolation, purification, and identification techniques of different PENs, the vesicles of natural plant origin can provide a theoretical basis for their better development and utilization with an important role to play in the human health industry and beyond. [155][156][157][158][159][160]…”

Section: Application Of Plant Vesicles For Drug Deliverymentioning

confidence: 99%