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Akhila PP, Sunooj KV, Bangar SP, Aaliya B, Navaf M, Indumathy B, Yugeswaran S, Sinha SK, Mir SA, Mounir S, George J, Nemțanu MR. Assessing the impact of plasma-activated water-assisted heat-moisture treatment on the extrusion-recrystallization process of hausa potato starch. Carbohydr Polym 2024; 335:122081. [PMID: 38616099 DOI: 10.1016/j.carbpol.2024.122081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/16/2024] [Accepted: 03/20/2024] [Indexed: 04/16/2024]
Abstract
The study explored the plasma-activated water (PAW)-assisted heat-moisture treatment (HMT) on the structural, physico-chemical properties, and in vitro digestibility of extrusion-recrystallized starch. Native starch of hausa potatoes underwent modification through a dual process involving PAW-assisted HMT (PHMT) followed by extrusion-recrystallization (PERH) using a twin-screw extruder. The PHMT sample showed surface roughness and etching with a significantly greater (p ≤ 0.05) RC (20.12 %) and ΔH (5.86 J/g) compared to DHMT. In contrast, PERH-induced structural damage, resulting in an irregular block structure, and altered the crystalline pattern from A to B + V-type characterized by peaks at 17.04°, 19.74°, 22°, and 23.94°. DSC analysis showed two endothermic peaks in all the extrusion-recrystallized samples, having the initial peak attributed to the melting of structured amylopectin chains and the second one linked to the melting of complexes formed during retrogradation. Dual-modified samples displayed notably increased transition temperatures (To1 74.54 and 74.17 °C, To2 122.65 and 121.49 °C), along with increased RS content (43.76 %-45.30 %). This study envisages a novel approach for RS preparation and broadens the utilization of PAW in starch modification synergistically with environmentally friendly techniques.
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Affiliation(s)
| | | | - Sneh Punia Bangar
- Department of Food, Nutrition and Packaging Sciences, Clemson University, 29634, USA
| | - Basheer Aaliya
- Department of Food Science and Technology, Pondicherry University, Puducherry 605014, India
| | - Muhammed Navaf
- Department of Food Science and Technology, Pondicherry University, Puducherry 605014, India
| | | | | | - Suraj Kumar Sinha
- Department of Physics, Pondicherry University, Puducherry 605014, India
| | - Shabir Ahmad Mir
- Department of Food Science and Technology, Government College for Women, MA Road, 14 Srinagar, Jammu, and Kashmir, India
| | - Sabah Mounir
- Department of Food Science, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Johnsy George
- Food Engineering and Packaging Division, Defence Food Research Laboratory, Siddartha Nagar, Mysore 570011, India
| | - Monica-Roxana Nemțanu
- Electron Accelerators Laboratory, National Institute for Laser, Plasma and Radiation Physics, 409 Atomiştilor St., P.O. Box MG-36, 077125 Bucharest-Măgurele, Romania
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Thirumurugan N, Nandy N, Amarnath P, Yugeswaran S, Suresh K, Sujeeth NK, Gnanadesigan M. Expeditive carbofuran pesticide degradation by submerged thermal plasma and its accelerated mineralization by persulfate addition. Environ Pollut 2024; 347:123779. [PMID: 38484961 DOI: 10.1016/j.envpol.2024.123779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/26/2024] [Accepted: 03/11/2024] [Indexed: 03/19/2024]
Abstract
Rapid degradation of carbofuran (CBF) pesticide is effectively achieved by submerged thermal plasma (STP) without and with the addition of persulfate (PS) at two different concentrations (10 and 20 ppm). Degradation efficiency was examined using high-performance liquid chromatography (HPLC), and mineralization percentage was determined by total organic carbon (TOC) analysis. Adding 10 ppm PS showed higher degradation and mineralization percentages of 99.5% and 65.2%, respectively, than mere plasma treatment and 20 ppm PS addition to CBF solution. A relatively higher energy yield of 40 mg/kWh and a first order kinetic reaction rate of 0.262 min-1 were obtained in the 10 PS added STP treatment. Liquid chromatography mass spectrometry (LCMS) analysis illustrated reaction intermediates formed during plasma treatment. Scavenger investigation implied that •OH radical is the prime cause of CBF degradation, as degradation percentage declined to 50% in all conditions. Toxicity assessment of CBF and its degradation products was predicted using Toxicity estimation software tool (TEST), and plasma treated solutions (PTS) were experimentally investigated on Eudrilus eugeniae earthworms by monitoring its mortality rate, self-assemblage, and histopathological analysis. A lower mortality rate (46%) and self-assemblage (167 s) of earthworms were detected for plasma treated CBF than for the other conditions. The results reveal that PTS is less toxic for earthworms than untreated CBF solution. These findings imply that STP is an effective technique for bio-recalcitrant pollutants degradation in agrochemical industries.
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Affiliation(s)
- Nagaraj Thirumurugan
- Surface and Environmental Control Plasma Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641046, India
| | - Nanditta Nandy
- Applied Thermal Plasma Laboratory, Department of Physics, Pondicherry University, Puducherry, 605014, India
| | - Pasupathi Amarnath
- Applied Thermal Plasma Laboratory, Department of Physics, Pondicherry University, Puducherry, 605014, India
| | - Subramaniam Yugeswaran
- Applied Thermal Plasma Laboratory, Department of Physics, Pondicherry University, Puducherry, 605014, India
| | - Kalidass Suresh
- Surface and Environmental Control Plasma Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641046, India.
| | - Nachimuthu Krishnan Sujeeth
- Natural Product Research Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, 641046, India
| | - Murugesan Gnanadesigan
- Natural Product Research Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, 641046, India
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Amarnath P, Nandy N, Indumathy B, Yugeswaran S. Study on CO2 based thermal plasma torch and its effective utilization for material processing in atmospheric pressure. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Navaneetha Pandiyaraj K, Vasu D, Kandavelu V, Pichumani M, Yugeswaran S, Deshmukh R. Degradation of isothiazolin‐3‐one’s from an aqueous solution via a multi‐pin non‐thermal atmospheric pressure plasma and its toxicity analysis. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- K. Navaneetha Pandiyaraj
- Department of Physics Sri Ramakrishna Mission Vidyalaya College of Arts and Science Coimbatore‐641020 India
| | - D. Vasu
- Research Division of Plasma Processing (RDPP) Department of Physics Sri Shakthi Institute of Engineering and Technology Coimbatore 641062 India
| | - V. Kandavelu
- Department of Chemistry Sri Ramakrishna Mission Vidyalaya College of Arts and Science Coimbatore‐641020 India
| | - M. Pichumani
- Department of Nanoscience and Technology Sri Ramakrishna Engineering College Coimbatore‐641022 India
| | - S. Yugeswaran
- Department of Physics Pondicherry University Puducherry 605014 India
| | - R.R. Deshmukh
- Department of Physics Institute of Chemical Technology Matunga Mumbai 400019 India
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Saravanakumar R, Ramachandran K, Laly LG, Ananthapadmanabhan PV, Yugeswaran S. Plasma assisted synthesis of γ-alumina from waste aluminium dross. Waste Manag 2018; 77:565-575. [PMID: 29778404 DOI: 10.1016/j.wasman.2018.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/29/2018] [Accepted: 05/04/2018] [Indexed: 06/08/2023]
Abstract
Aluminium dross, a waste generated from aluminium melting process, contains aluminium metal, aluminium oxide, aluminium oxy-nitride and impurities such as sodium chloride and potassium chloride. Since aluminium dross is land filled without treatment, it is hazardous to the environment. Conventional methods for the metal recovery from the recycling of aluminium dross involve chemicals and are time consuming. In this study, an attempt was made to treat aluminium dross using plasma arc melting process. The aluminium dross was melted and evaporated by the plasma arc established between a crucible anode and a rod type hollow cathode made of graphite. Raw dross and products of plasma treated dross such as slag and fine powder were characterized. The generation of ultrafine alumina powder and slag are explained using simulation of the plasma arc inside the crucible and free energy minimization calculations. High temperature and air entrainment into the plasma inside the crucible converted the dross into alumina slag and fine powder. The amount of fine alumina powder produced increased substantially with plasma power initially as seen from the results of alumina obtained at 5 kW and 10 kW. However, further increase in plasma power resulted only in marginal increase in the conversion of Al dross to alumina. Results of this study indicate that arc plasma technology can be effectively applied to convert Al dross into value added fine alumina powder.
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Affiliation(s)
- R Saravanakumar
- Department of Physics, Bharathiar University, Coimbatore, TN, India
| | - K Ramachandran
- Department of Physics, Bharathiar University, Coimbatore, TN, India.
| | - Lintu G Laly
- Department of Physics, Bharathiar University, Coimbatore, TN, India
| | | | - S Yugeswaran
- Centre for Advanced Coating Technologies, University of Toronto, Toronto, ON M5S 3G8, Canada
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Yugeswaran S, Vijay M, Suresh K, Ananthapadmanabhan P, Karoly Z, Szépvölgyi J. Synthesis of mullite from sillimanite dissociation through transferred arc plasma torch. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.minpro.2011.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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