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Kondareddy R, Nayak PK, Krishnan KR, Deka D, Kumar KR. Experimental investigation and energy-exergy-environmental-economic analysis of modified indirect solar dual collector dryer while drying myrobalan slices. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:38527-38541. [PMID: 37261693 DOI: 10.1007/s11356-023-27693-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023]
Abstract
The paper presents the performance evaluation of a modified indirect solar dual collector dryer (MIS2CD) integrated with a thermal storage system for drying myrobalan slices. The design of the solar collector and solar collector with thermal storage was to supply uninterrupted thermal energy to the drying chamber during sunny and sunset hours. To evaluate the dryer performances, one lot (20 kg) of myrobalan was dried in the MIS2CD, and as a result, the thermal efficiency and energy supply period of MIS2CD increased by 12 ± 02% and 41 ± 1.2%, respectively. Drying characteristics of myrobalan slices in MIS2CD, TD, and OSD were studied and compared. A two-term exponential model best explains the drying kinetics of myrobalan slices dried in MIS2CD. The dried sample in MIS2CD results in lesser ΔE* values than TD and OSD methods. The highest exergy efficiency of 78.2% and lower exergy losses were recorded. The energy payback period of the MIS2CD was evaluated as 1.42 years. The CO2 emitted and CO2 reduced reduction are calculated for drying myrobalan in MIS2CD for a lifetime (20 years) of 67.85 kg and 20.65 tons, respectively. The capital cost of the solar dryer design was estimated depending on the economic considerations of the state. The drying hours were increased in MIS2CD against OSD by 59% on the annual sunny days (210 days). The sample drying period MSD and TD to reach the final moisture level of 7% was 9 h and 5 h, respectively. The total economic benefit is 22,622 INR (annually), and the 2.08 benefit-cost ratio for myrobalan dried in MIS2CD compared to TD. The MIS2CD's payback period is nearly 2.18 years, much less than the dryer's lifetime.
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Affiliation(s)
- Rajesh Kondareddy
- Department of Instrumentation Engineering, CIT Kokrajhar, Kokrajhar, Assam-783370, India
| | - Prakash Kumar Nayak
- Department of Food Engineering & Technology, CIT Kokrajhar, Kokrajhar, BTR, Assam-783370, India.
| | - Kesavan Radha Krishnan
- Department of Food Engineering & Technology, CIT Kokrajhar, Kokrajhar, BTR, Assam-783370, India
| | - Dipen Deka
- Department of Instrumentation Engineering, CIT Kokrajhar, Kokrajhar, Assam-783370, India
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Dadhaneeya H, Kesavan RK, Inbaraj BS, Sharma M, Kamma S, Nayak PK, Sridhar K. Impact of Different Drying Methods on the Phenolic Composition, In Vitro Antioxidant Activity, and Quality Attributes of Dragon Fruit Slices and Pulp. Foods 2023; 12:foods12071387. [PMID: 37048211 PMCID: PMC10093639 DOI: 10.3390/foods12071387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/19/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
The aim of this study was to compare the refractance window drying method (RWD) with the hot air oven drying (HD), vacuum drying (VD), and freeze-drying (FD) methods in order to analyze the outcomes of the qualitative properties of dragon fruit slices and pulp. Moreover, the impact of temperature on the phenolic content, antioxidant activity, color, and texture of the dragon fruit slices and pulp were studied. The results showed that the RWD samples exhibited a high nutritional quality in contrast to the other drying methods. The RWD method had a short drying time of 960 min to reach the final moisture content of 6.50% (dry basis), while the FD, VD, and HD methods had significantly higher drying times of 1320, 1200, and 1080 min, respectively, to reach the final moisture content. Higher values of TPC (182 mg GAE/100 g) and crude fiber (0.98%) were obtained in the RWD dragon fruit samples, indicating the potential of RWD to preserve the quality of dried samples. In conclusion, this study revealed that RWD provides an appropriate drying temperature as an alternative to freeze-drying. RWD may improve dragon fruit drying, adding value to the food industry.
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Affiliation(s)
- Harsh Dadhaneeya
- Department of Food Engineering and Technology, Central Institute of Technology, Kokrajhar 783370, India
| | - Radha Krishnan Kesavan
- Department of Food Engineering and Technology, Central Institute of Technology, Kokrajhar 783370, India
| | | | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology Meghalaya, Baridua 793101, India
| | - Srinivasulu Kamma
- Department of Food Technology, Koneru Lakshmaiah Education Foundation Deemed to be University, Vaddeswaram 522502, India
| | - Prakash Kumar Nayak
- Department of Food Engineering and Technology, Central Institute of Technology, Kokrajhar 783370, India
- Correspondence: (P.K.N.); (K.S.)
| | - Kandi Sridhar
- Department of Food Technology, Koneru Lakshmaiah Education Foundation Deemed to be University, Vaddeswaram 522502, India
- Correspondence: (P.K.N.); (K.S.)
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Nayak PK, Sundarsingh A, Kesavan RK. In vitro gastrointestinal digestion studies on total phenols, flavonoids, anti-oxidant activity and vitamin C in freeze-dried vegetable powders. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2022; 59:4253-4261. [PMID: 36193453 PMCID: PMC9525489 DOI: 10.1007/s13197-022-05488-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 04/13/2022] [Accepted: 05/15/2022] [Indexed: 06/16/2023]
Abstract
In the present research study, the impact of digestion process on the levels of total phenols, flavonoids, vitamin C as well as anti-oxidant activity in freeze dried powders of mustard greens (MG) and roselle leaves (RL) was investigated. In addition, physicochemical and functional properties of MG and RL samples also evaluated. The digestion of freeze-dried vegetable powders was achieved through in vitro digestive procedure using various enzymes. From the study, it was observed that the digestion process increased the availability of phenols in both powders, where the digested vegetable powders possessed higher levels of total phenols and flavonoids. In contrast, the levels of vitamin C and anti-oxidant activity of vegetable powders (MG & RL) was found to be decreased minimally. Our research study suggests that in vitro digestion could enhance the TPC and TFC in mustard greens and roselle leaves. Therefore, MG and RL can be considered as a functional ingredient in the development of new products with better nutritional and functional characteristics. Further, the data on the physicochemical, functional and bioactive compounds in MG and RL may be used as reference for the enhancement of quality of products developed from MG and RL.
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Affiliation(s)
- Prakash Kumar Nayak
- Present Address: Department of Food Engineering and Technology, Central Institute of Technology, Kokrajhar, 783370 Assam India
| | - Anjelina Sundarsingh
- Department of Food Technology, Ghani Khan Choudhury Institute of Engineering & Technology, Malda, 732141 West Bengal India
| | - Radha krishnan Kesavan
- Present Address: Department of Food Engineering and Technology, Central Institute of Technology, Kokrajhar, 783370 Assam India
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Kondareddy R, Natarajan S, Radha Krishnan K, Saikia D, Singha S, Nayak PK. Performance evaluation of modified forced convection solar dryer with energy storage unit for drying of elephant apple (
Dillenia indica
). J FOOD PROCESS ENG 2021. [DOI: 10.1111/jfpe.13934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rajesh Kondareddy
- Department of Instrumentation and Control NIT Tiruchirappalli Tiruchirappalli India
- Department of Instrumentation Engineering CIT Kokrajhar Kokrajhar India
| | | | | | - Dipanka Saikia
- Department of Food Engineering & Technology CIT Kokrajhar Kokrajhar India
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Feasibility study of a chlorophyll dosimeter for high energy X-ray beam used in radiotherapy. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-08106-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nayak PK, Chandrasekar CM, Haque A, Kesavan RK. Influence of pre‐treatments on the degradation kinetics of chlorophylls in morisa xak (
Amaranthus caudatus
) leaves after microwave drying. J FOOD PROCESS ENG 2021. [DOI: 10.1111/jfpe.13790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Prakash Kumar Nayak
- Department of Food Engineering & Technology Central Institute of Technology Kokrajhar Assam India
| | | | - Anbarul Haque
- Department of Food Engineering & Technology Central Institute of Technology Kokrajhar Assam India
| | - Radha Krishnan Kesavan
- Department of Food Engineering & Technology Central Institute of Technology Kokrajhar Assam India
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Jha P, Meghwal M, Prabhakar PK. Microwave drying of banana blossoms (
Musa acuminata
): Mathematical modeling and drying energetics. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15717] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Pooja Jha
- Department of Food Science and Technology National Institute of Food Technology Entrepreneurship and Management Sonipat India
| | - Murlidhar Meghwal
- Department of Food Science and Technology National Institute of Food Technology Entrepreneurship and Management Sonipat India
| | - Pramod K. Prabhakar
- Department of Food Science and Technology National Institute of Food Technology Entrepreneurship and Management Sonipat India
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Kondareddy R, Sivakumaran N, Radha Krishnan K, Nayak PK, Sahu FM, Singha S. Performance evaluation and economic analysis of modified solar dryer with thermal energy storage for drying of blood fruit (
Haematocarpus validus
). J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rajesh Kondareddy
- Department of Instrumentation and Control NIT Tiruchirappalli Tiruchirappalli India
- Department of Instrumentation Engineering CIT Kokrajhar Kokrajhar India
| | | | | | | | - Fakir Mohan Sahu
- Department of Post‐Harvest Technology Navsari Agricultural University Navsari India
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Effect of Oxidative Stress on Physicochemical Quality of Taiwanese Seagrape (Caulerpa lentillifera) with the Application of Alternating Current Electric Field (ACEF) during Post-Harvest Storage. Processes (Basel) 2021. [DOI: 10.3390/pr9061011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
This study aims to determine the physicochemical quality of seagrape (Caulerpa lentillifera) as a freshness label for products cultivated in different seasons. The applied post-harvest storage experiments compared between, within and without seawater that led to oxidative stress conditions. Water content, malondialdehyde (MDA) compound, total phenolic content (TPC), and chlorophyll content were observed at 0, 3, 6, and 9 days of storage. The storage without seawater showed sharper quality reductions by reaching 20–40% of water loss, 70–90% of MDA production, 15–25% of TPC reduction, and 40–60% of total chlorophyll degradation. The storage within seawater showed lower quality reductions due to the specific growth rates still reaching 5–10%. This study found that the greater the physicochemical quality, the slower the decomposition rates of the stored seagrape during storage. Therefore, the seagrapes’ obvious discoloration occurred earlier in winter, followed by summer and spring. Kinetics of chlorophyll degradation on seagrape in different seasons meet different order-reactions during storage. Furthermore, alternating current electric field (ACEF) treatment with 125 kV/m of intensity for 60 min can lower the spring seagrapes’ physicochemical quality by reaching 10–30% of inhibition, resulting in the shelf-life extension for up to 12 days of post-harvest storage.
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Nayak PK, Chandrasekar CM, Sundarsingh A, Kesavan RK. Effect of in-vitro digestion on the bio active compounds and biological activities of fruit pomaces. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2020; 57:4707-4715. [PMID: 33087981 DOI: 10.1007/s13197-020-04507-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 04/18/2020] [Accepted: 04/30/2020] [Indexed: 10/24/2022]
Abstract
The effect of gastro intestinal digestion on total phenolic contents (TPC), total flavonoid contents (TFC), radical scavenging activity (RSA) and vitamin C levels of apple (Malus domestica) pomace and a local variety of jujube (Ziziphus mauritiana) pomace was evaluated after drying at 110 °C for 3 h in a hot air oven. The physicochemical properties and functional properties of apple and jujube pomaces were also assessed. Prior to digestion, apple pomace displayed greater levels of TPC, RSA and vitamin C (17.30 ± 0.59 GAE/g DW, 81.16 ± 3.27%, 0.078 ± 0.01 g/L, respectively) in comparison with jujube pomace (16.90 ± 0.66 GAE/g DW, 54.65 ± 2.09%, 0.069 ± 0.01 g/L, respectively), whereas, TFC level was found to be higher in jujube pomace (19.22 ± 0.87 QE/g DW). After digestion, both samples showed an increase in TPC (56.17 ± 2.14 and 52.01 ± 2.18 GAE/g DW for apple and jujube pomaces) and TFC levels (48.45 ± 1.87 and 53.82 ± 2.34 QE/g DW for apple and jujube pomaces) and it was perceived almost 3 to 4 times higher than the TPC and TFC of the samples before digestion. But, RSA of the fruit pomaces were found to be affected by the in vitro digestion which was observed as 54.65 ± 2.09 and 81.16 ± 3.27% respectively for apple and jujube pomaces. It may be suggested that the fruit powders may be incorporated in developing new functional foods rich in bio active compounds and thus can be utilized in different food applications.
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Affiliation(s)
- Prakash Kumar Nayak
- Department of FET, Central Institute of Technology, Kokrajhar, BTAD, Assam 783370 India
| | | | - Anjelina Sundarsingh
- Department of FET, Central Institute of Technology, Kokrajhar, BTAD, Assam 783370 India.,Department of FEBT, SERD, Asian Institute of Technology, Bangkok, Khlong Luang, 12120 Thailand
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Ultra-sonicated vacuum drying's effect on antioxidant activity, TPC, TFC and color of elephant apple slices. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100629] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Nayak PK, Basumatary B, Chandrasekar CM, Seth D, Kesavan RK. Impact of thermosonication and pasteurization on total phenolic contents, total flavonoid contents, antioxidant activity, and vitamin C levels of elephant apple (
Dillenia indica
) juice. J FOOD PROCESS ENG 2020. [DOI: 10.1111/jfpe.13447] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Lakshmi DVN, Muthukumar P, Ekka JP, Nayak PK, Layek A. Performance comparison of mixed mode and indirect mode parallel flow forced convection solar driers for drying
Curcuma zedoaria. J FOOD PROCESS ENG 2019. [DOI: 10.1111/jfpe.13045] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Durga V. N. Lakshmi
- Department of Mechanical EngineeringNational Institute of Technology Durgapur Durgapur, West Bengal India
| | - Palanisamy Muthukumar
- Department of Mechanical EngineeringIndian Institute of Technology Guwahati Assam India
| | - Jasinta P. Ekka
- Department of Mechanical EngineeringIndian Institute of Technology Guwahati Assam India
| | - Prakash K. Nayak
- Department of Food Engineering & Technology CIT Kokrajhar Assam India
| | - Apurba Layek
- Department of Mechanical EngineeringNational Institute of Technology Durgapur Durgapur, West Bengal India
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