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Author: search.filters.author.Mal, S.S.

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    Physicochemical characterization of microcrystalline cellulose extracted by sequential dual acid hydrolysis
    (Elsevier, 2024) Kalita, R.D.; Chakraborty, I.; Singh, P.; Banik, S.; Mal, S.S.; Zhuo, G.-Y.; Mazumder, N.
    Properties and applications of microcrystalline cellulose (MCC) differ based on its source and method of extraction. In this article, MCC was extracted from Saccharum spontaneum using single acid hydrolysis (MCC1) and sequential dual acid hydrolysis (MCC2). Scanning electron microscope (SEM) images exhibited that the dimension of MCC2 is much smaller compared to MCC1. X-ray diffraction (XRD) indicated that sequential dual acid hydrolysis results in decrease the crystallinity index (CI%) in case of MCC2 (34.45%). Fourier transform infrared spectroscopy (FTIR) spectra indicates the presence of characteristic bonds such as O–H stretching, C–H stretching, OH bending, and C–O–C stretching in both MCC1 and MCC2. Based on thermal analysis conducted using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), it was confirmed that MCC2 (275.0°C) melts at much lower temperature compared to MCC1 (342.04°C). MCC2 is also less thermally stable compared to MCC1 in terms of mass loss (%). In all, both MCC1 and MCC2 have different physicochemical properties based on the process of extraction and may have different applications. Based on their physicochemical characteristics, smaller MCC particles are known to be favored for wide variety of applications such as pharmaceutical excipients and impact factors such as tablet hardness, friability, and disintegration. © 2024 Elsevier Inc. All rights are reserved including those for text and data mining AI training and similar technologies.
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    Impact of dietary advanced glycation end products (dAGEs) in processed foods on health
    (Elsevier, 2024) Kunnel, S.; Chakraborty, I.; Govindaraju, I.; Mal, S.S.; Mazumder, N.
    A correlation has been observed between increased consumption of processed food and the rise of various metabolic, neurological, and reproductive diseases. This can be attributed to the formation of dietary advanced glycation end products (dAGEs), which are known to be present in high concentrations in processed food items. This review primarily focuses on the factors affecting formation of AGEs present in processed food items and its role in the development of various diseases such as metabolic diseases, neurological disorders, infertility, and cancer have been presented here. © 2024 Elsevier Inc. All rights are reserved including those for text and data mining AI training and similar technologies.
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    Organic-inorganic hybrid mixed-valent bisphosphonate-polyoxovanadates composites with activated carbon for energy storage applications
    (Nova Science Publishers, Inc., 2024) Madhusree, J.E.; Banerjee, A.; Mal, S.S.
    In this book, we discuss the investigation of two different bisphosphonate-functionalized polyoxovanadate compounds for use in electrochemical energy storage applications. The compounds are (NH4)4[H6(VIVO2)(VV2O5)2O3P-C(O)(CH2-2-C5NH4)-PO32].9H2O (m), and (NH4)4[H6(VIVO2)(VV2O5)2O3P-C(O)(CH2-3-C5NH4)-PO32]. 8H2O (n). They have a mixed-valent oxovanadate polyanionic assembly that has two different pyridyl functional groups present on the organic bisphosphonate ligand. Several techniques have been used to characterize composites made from these compounds with activated carbon, including Fourier transform infrared spectroscopy, P-XRD, FESEM, EDX, and surface adsorption-desorption tests. The electrochemical performance of acidic electrolytic solutions containing 0.1 M H2SO4, AC-m, and AC-n electrode materials was investigated. Although the compounds are isotypic mixed-valence polyoxovanadate structures, their electrical behavior varies based on the position of the pyridyl group. AC-n was reported to have the most prominent specific capacitance of 313 F g-1 at a current density of 1 A g-1 in a voltage window of 0-1 V, with exceptional energy and power densities of 43.56 Wh kg-1 and 1999.72 W kg-1, respectively. At the same time, AC-m exhibited a specific capacitance of 212 F g-1 and a specific energy of 29.45 Wh kg-1. By lighting up different LED lights with only 42 mg of carbon clothcoated sample, the composite AC-n electrode displayed exceptional specific power. A further benefit of AC-n nanohybrids is their ability to retain electrochemical performance over time, which suggests long-term stability. © 2024 Nova Science Publishers, Inc. All rights reserved.