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Nian X, Wang J, Wang M, Wang Y, Liu S, Cao Y. Influence of ultrasonic pretreatment on the quality attributes and pectin structure of chili peppers (Capsicum spp.). ULTRASONICS SONOCHEMISTRY 2024; 110:107041. [PMID: 39208593 PMCID: PMC11399734 DOI: 10.1016/j.ultsonch.2024.107041] [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: 06/28/2024] [Revised: 08/11/2024] [Accepted: 08/20/2024] [Indexed: 09/04/2024]
Abstract
Chili peppers (Capsicum spp.) exhibit a diverse range of quality characteristics and pectin structures, which are influenced by various factors. This study aimed to investigate the effects of ultrasound (US), ultrasonic combined hot blanching (US-BL), and ultrasonic combined freezing and thawing (US-FT) on the quality characteristics and pectin structure of vacuum pulsation-dried (VP) chili peppers. The results indicated that US-BL samples exhibited the highest L* and a* values, retained maximum capsorubin, and showed an increase in vitamin C, total phenols, and rehydration by 14.28 %, 40.87 %, and 8.66 %, respectively. In contrast, the US-FT samples exhibited the highest capsaicin and dihydrocapsaicin content, which increased by 54.97 % and 64.04 %, respectively. Pretreatment resulted in higher pectin linearity, a lower degree of branching, and a reduced molecular weight in the US-BL sample. Atomic force microscopy confirmed the degrading effect of pretreatment on the pectin structure. Pearson's correlation analysis revealed that capsorubin, capsaicin analogs, vitamin C, and total phenols were highly correlated with pectin linearity and molecular weight. This study found that US-BL was the most effective pretreatment method for improving the quality of pulsatile chili peppers and provides theoretical support for the application of VP chili peppers.
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Affiliation(s)
- Xin Nian
- School of Food Science and Technology, Ningxia University, Yinchuan, Ningxia 750000, China
| | - Jitao Wang
- School of Civil and Hydrulic Engineering, Ningxia University, Yinchuan, Ningxia 750000, China; Horticulture Technology Extension Center of Ningxia, Ningxia 750000, China
| | - Mengze Wang
- School of Food Science and Technology, Ningxia University, Yinchuan, Ningxia 750000, China.
| | - Yaqi Wang
- School of Food Science and Technology, Ningxia University, Yinchuan, Ningxia 750000, China
| | - Shiwei Liu
- Horticulture Technology Extension Center of Ningxia, Ningxia 750000, China
| | - Yudan Cao
- School of Food Science and Technology, Ningxia University, Yinchuan, Ningxia 750000, China
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2
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Cansu Ü. Utilization of Infrared Drying as Alternative to Spray- and Freeze-Drying for Low Energy Consumption in the Production of Powdered Gelatin. Gels 2024; 10:522. [PMID: 39195051 DOI: 10.3390/gels10080522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 07/30/2024] [Accepted: 08/06/2024] [Indexed: 08/29/2024] Open
Abstract
This study evaluated possible utilization of infrared drying (ID) as an alternative to spray- (SD) and freeze-drying (FD) for fish skin-derived gelatins. Physical, functional, thermal, and spectroscopic analyses were conducted for characterization of the resulting gelatin powders. Energy consumption for the applied drying methods were 3.41, 8.46 and 25.33 kWh/kg for ID, SD and FD respectively, indicating that ID had the lowest energy consumption among the studied methods. Gel strength, on the other hand, was lower (398.4 g) in infrared-dried gelatin (ID-FG) compared to that (454.9 g) of freeze-dried gelatin (FD-FG) and that (472.7 g) of spray-dried gelatin (SD-FG). TGA curves indicated that ID-FG showed more resilience to thermal degradation. SDS-PAGE and UV-Vis spectra indicated that slight degradation was observed in the β-configuration of ID-FG. ID-FG and SD-FG gelatins had the highest water holding capacity (WHC), protein solubility and transparency values compared to that of FD-FG. Morphological structures of the samples were quite different as shown by SEM visuals. Ultimately, the findings showed that infrared drying may be a promising alternative for gelatin processing, maintaining product quality and supporting sustainable practices in food and other industries.
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Affiliation(s)
- Ümran Cansu
- Organized Industrial Zone Vocational School, Harran University, 63200 Şanlıurfa, Turkey
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3
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Igbozulike AO, Ndirika VIO, Simonyan KJ. Evaluation of energy consumption in drying African oil bean seeds using response surface methodology. ARAB JOURNAL OF BASIC AND APPLIED SCIENCES 2023. [DOI: 10.1080/25765299.2023.2191955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
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4
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Yao J, Chen W, Fan K. Novel Efficient Physical Technologies for Enhancing Freeze Drying of Fruits and Vegetables: A Review. Foods 2023; 12:4321. [PMID: 38231776 DOI: 10.3390/foods12234321] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 01/19/2024] Open
Abstract
Drying is the main technical means of fruit and vegetable processing and storage; freeze drying is one of the best dehydration processes for fruit and vegetables, and the quality of the final product obtained is the highest. The process is carried out under vacuum and at low temperatures, which inhibits enzymatic activity and the growth and multiplication of micro-organisms, and better preserves the nutrient content and flavor of the product. Despite its many advantages, freeze drying consumes approximately four to ten times more energy than hot-air drying, and is more costly, so freeze drying can be assisted by means of highly efficient physical fields. This paper reviews the definition, principles and steps of freeze drying, and introduces the application mechanisms of several efficient physical fields such as ultrasonic, microwave, infrared radiation and pulsed electric fields, as well as the application of efficient physical fields in the freeze drying of fruits and vegetables. The application of high efficiency physical fields with freeze drying can improve drying kinetics, increase drying rates and maintain maximum product quality, providing benefits in terms of energy, time and cost. Efficient physical field and freeze drying technologies can be well linked to sustainable deep processing of fruit and vegetables and have a wide range of development prospects.
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Affiliation(s)
- Jianhua Yao
- College of Life Science, Yangtze University, Jingzhou 434025, China
| | - Wenjuan Chen
- National Polymer Materials Industry Innovation Center Co., Ltd., Guangzhou 510530, China
| | - Kai Fan
- College of Life Science, Yangtze University, Jingzhou 434025, China
- Institute of Food Science and Technology, Yangtze University, Jingzhou 434025, China
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5
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Li S, Liu F, Wu M, Li Y, Song X, Yin J. Effects of Drying Treatments on Nutritional Compositions, Volatile Flavor Compounds, and Bioactive Substances of Broad Beans. Foods 2023; 12:foods12112160. [PMID: 37297405 DOI: 10.3390/foods12112160] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
In this study, different drying methods, including hot air drying, sun drying, and freeze drying were employed to dry fresh broad beans. The nutritional composition, volatile organic components and bioactive substances of the dried broad beans were systematically compared. The results indicated significant differences (p < 0.05) in nutritional composition, such as protein and soluble sugar content. Among the 66 identified volatile organic compounds, freeze drying and hot air drying significantly promote the production of alcohols and aldehydes, while sun drying effectively preserves esters. In terms of bioactive substances, broad beans dried by freeze drying exhibit the highest total phenol content as well as the strongest antioxidant capacity and gallic acid, followed by sun drying. The chemometric analysis revealed that the bioactive compounds in broad beans dried by three different methods were primarily composed of flavonoids, organic acids, and amino acids with significant differentiation. Notably, freeze-dried and sun-dried broad beans exhibited a higher concentration of differential substances.
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Affiliation(s)
- Si Li
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Fangwei Liu
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Mulan Wu
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Yuhao Li
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Xiaoxiao Song
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Junyi Yin
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
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6
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Bai JW, Wang YC, Cai JR, Zhang L, Dai Y, Tian XY, Xiao HW. Three-Dimensional Appearance and Physicochemical Properties of Pleurotus eryngii under Different Drying Methods. Foods 2023; 12:foods12101999. [PMID: 37238817 DOI: 10.3390/foods12101999] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/09/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
This study investigated the effects of different drying methods on the drying characteristics, three-dimensional (3D) appearance, color, total polysaccharide content (TPC), antioxidant activity, and microstructure of Pleurotus eryngii slices. The drying methods included hot air drying (HAD), infrared drying (ID), and microwave drying (MD). The results showed that the drying method and conditions significantly influenced the drying time, with MD having a significant advantage in reducing the drying time. The 3D appearance of P. eryngii slices was evaluated based on shrinkage and roughness as quantitative indexes, and the best appearance was obtained by hot air drying at 55 and 65 °C. HAD and ID at lower drying temperatures obtained better color, TPC, and antioxidant activity, but MD significantly damaged the color and nutritional quality of P. eryngii. The microstructure of dried P. eryngii slices was observed using scanning electron microscopy, and the results showed that drying methods and conditions had an obvious effect on the microstructure of P. eryngii slices. Scattered mycelia were clearly observed in P. eryngii samples dried by HAD and ID at lower drying temperatures, while high drying temperatures led to the cross-linking and aggregation of mycelia. This study offers scientific and technical support for choosing appropriate drying methods to achieve a desirable appearance and quality of dried P. eryngii.
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Affiliation(s)
- Jun-Wen Bai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yu-Chi Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jian-Rong Cai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Lu Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yi Dai
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiao-Yu Tian
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Hong-Wei Xiao
- College of Engineering, China Agricultural University, Beijing 100083, China
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7
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Lin Q, Zong X, Lin H, Huang X, Wang J, Nie S. Based on quality, energy consumption selecting optimal drying methods of mango slices and kinetics modelling. Food Chem X 2023; 17:100600. [PMID: 36845479 PMCID: PMC9945624 DOI: 10.1016/j.fochx.2023.100600] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/24/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023] Open
Abstract
Mangoes have a short shelf life because of their high-water content. This study aimed to compare the effect of three drying methods (HAD, FIRD and VFD) on mango slices to improve product quality and reduce costs. Mangoes were dried at various temperatures (50, 60, 70 °C) with different slice thicknesses (3, 5, 7, 10 mm). Results indicated that FIRD was the most cost-effective with the dried mango containing the highest sugar-acid ratio, and when the mango slices thickness was 7 mm and drying at 70 °C, the ascorbic acid content, rehydration ratio, sugar-acid ratio, and energy consumption per unit volume reached 56.84 ± 2.38 mg/100 g, 2.41 ± 0.05, 83.87 ± 2.14, and 0.53 kWh/L. Among three mathematical models, the Page model described the most satisfactory drying behaviour of mango slices in FIRD. This study provides useful information in mango processing industry and FIRD is supposed to be a promising drying method.
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Affiliation(s)
- Qiongni Lin
- State Key Laboratory of Food Science and Technology, Nanchang University,235 Nanjing East Road, Nanchang, Jiangxi Province 330047, China
| | - Xinyan Zong
- State Key Laboratory of Food Science and Technology, Nanchang University,235 Nanjing East Road, Nanchang, Jiangxi Province 330047, China
| | - Huixia Lin
- College of Environment and Public Health, Xiamen Huaxia University, Xiamen 361024, China
| | - Xiaojun Huang
- State Key Laboratory of Food Science and Technology, Nanchang University,235 Nanjing East Road, Nanchang, Jiangxi Province 330047, China
| | - Junqiao Wang
- State Key Laboratory of Food Science and Technology, Nanchang University,235 Nanjing East Road, Nanchang, Jiangxi Province 330047, China
| | - Shaoping Nie
- State Key Laboratory of Food Science and Technology, Nanchang University,235 Nanjing East Road, Nanchang, Jiangxi Province 330047, China,Corresponding author.
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8
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Jimoh KA, Hashim N, Shamsudin R, Man HC, Jahari M, Onwude DI. Recent Advances in the Drying Process of Grains. FOOD ENGINEERING REVIEWS 2023. [DOI: 10.1007/s12393-023-09333-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
AbstractGrain drying is a vital operation in preparing finished grain products such as flour, drinks, confectioneries and infant food. The grain drying kinetics is governed by the heat and mass transfer process between the grain and the environment. Incomplete, improper and over-drying are crucial to the grain quality and negatively influence the acceptance of the grain by the consumers. Dried grain moisture content is a critical factor for developing grain drying systems and selecting optimal performance by researchers and the grain processing industry. Many grain drying technologies such as fluidised bed dryers, fixed bed dryers, infrared dryers, microwave dryers, vacuum dryers and freeze dryers have been used in recent years. To improve the drying process of grain, researchers have combined some drying technologies such as microwave + hot air, infrared + hot air and microwave + a fluidised bed dryer. Also, they introduce some treatments such as ultrasound dielectric and dehumidification. These methods enhance the dryer performance, such as higher moisture removal, reduced processing time, higher energy efficiency and nutrient retention. Therefore, this review focused on the drying conditions, time, energy consumption, nutrient retention and cost associated with the reduction of moisture content in grain to a suitable safe level for further processing and storage.
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9
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Kumar M, Kumar A. Performance Assessment and Modeling Techniques for Domestic Solar Dryers. FOOD ENGINEERING REVIEWS 2023. [PMCID: PMC9887261 DOI: 10.1007/s12393-023-09335-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Mahesh Kumar
- Department of Mechanical Engineering, Guru Jambheshwar University of Science & Technology, Hisar, India
| | - Anil Kumar
- Department of Mechanical Engineering, Delhi Technological University, Delhi, India
- Centre for Energy and Environment, Delhi Technological University, Delhi, India
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10
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Geng Z, Torki M, Kaveh M, Beigi M, Yang X. Characteristics and multi-objective optimization of carrot dehydration in a hybrid infrared /hot air dryer. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Talebzadeh SL, Fatemi H, Azizi M, Kaveh M, Salavati Nik A, Szymanek M, Kulig R. Interaction of Different Drying Methods and Storage on Appearance, Surface Structure, Energy, and Quality of Berberis vulgaris var. asperma. Foods 2022; 11:foods11193003. [PMID: 36230079 PMCID: PMC9564170 DOI: 10.3390/foods11193003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/17/2022] [Accepted: 09/22/2022] [Indexed: 11/29/2022] Open
Abstract
Seedless barberry fruit is native small fruit in Iran. To examine the impact of various drying methods and storage on the biochemical attributes (Vitamin C, Anthocyanin, Phenol, pH, TA), color index (a*, b*, L*, ab, and Chroma), drying time, and fruit microstructure (by SEM) of seedless barberry (Berberis vulgaris var. asperma), and effective moisture diffusivity coefficient (Deff), specific energy consumption (SEC), energy efficiency (EE) of the dryers, this experiment was performed. Drying treatments include microwave (100, 170, and 270 W), oven (60 and 70 °C), cabinet (50 and 70 °C), shade, sun, and fresh samples (control) and storage 6 months after drying (in polyethylene packaging and at a temperature of 5–10 °C). Results showed minimum and maximum drying times (50 min and 696 h), were related to microwave (270 W) and shade methods, respectively. The highest color values were observed in fruits treated with control, shade and sun treatments and the lowest values were observed in cabinet (70 °C) methods. According to the SEM results, microwave significantly affected surface structure of the dried sample compared to others. The findings indicated that the use of artificial drying methods than natural methods (sun and shade) cause a more significant reduction in color indexes, while vitamin C, soluble solids, and anthocyanin were significantly maintained at a high level. Storage reduced anthocyanin content of fruits almost 12%. Moreover, it was discovered EE and SEC values varied in the range of 1.16–25.26% and 12.20–1182 MJ/kg, respectively. Deff values were higher in microwave 270 W.
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Affiliation(s)
- Seyede Laleh Talebzadeh
- Department of Horticultural Science, Agricultural Faculty, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
| | - Hamideh Fatemi
- Department of Horticultural Science, Agricultural Faculty, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
| | - Majid Azizi
- Department of Horticultural Science, Agricultural Faculty, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
- Correspondence: (M.A.); (R.K.)
| | - Mohammad Kaveh
- Department of Petroleum Engineering, College of Engineering, Knowledge University, Erbil 44001, Iraq
| | - Amirali Salavati Nik
- Department of Horticultural Science, Agricultural Faculty, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
| | - Mariusz Szymanek
- Department of Agricultural, Forest and Transport Machinery, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland
| | - Ryszard Kulig
- Department of Food Engineering and Machines, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland
- Correspondence: (M.A.); (R.K.)
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12
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Adaptive neuro fuzzy inference system modeling of Synsepalum dulcificum L. drying characteristics and sensitivity analysis of the drying factors. Sci Rep 2022; 12:13261. [PMID: 35918406 PMCID: PMC9345913 DOI: 10.1038/s41598-022-17705-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 07/29/2022] [Indexed: 11/16/2022] Open
Abstract
The requirement for easily adoptable technology for fruit preservation in developing countries is paramount. This study investigated the effect of pre-treatment (warm water blanching time—3, 5 and 10 min at 60 °C) and drying temperature (50, 60 and 70 °C) on drying mechanisms of convectively dried Synsepalum dulcificum (miracle berry fruit—MBF) fruit. Refined Adaptive Neuro Fuzzy Inference System (ANFIS) was utilized to model the effect and establish the sensitivity of drying factors on the moisture ratio variability of MBF. Unblanched MBF had the longest drying time, lowest effective moisture diffusivity (EMD), highest total and specific energy consumption of 530 min, 5.1052 E−09 m2/s, 22.73 kWh and 113.64 kWh/kg, respectively at 50 °C drying time, with lowest activation energy of 28.8589 kJ/mol. The 3 min blanched MBF had the lowest drying time, highest EMD, lowest total and specific energy consumption of 130 min, 2.5607 E−08 m2/s, 7.47 kWh and 37 kWh/kg, respectively at 70 °C drying temperature. The 5 min blanched MBF had the highest activation energy of 37.4808 kJ/mol. Amongst others, 3—gbellmf—38 epoch ANFIS structure had the highest modeling and prediction efficiency (R2 = 0.9931). The moisture ratio variability was most sensitive to drying time at individual factor level, and drying time cum pretreatment at interactive factors level. In conclusion, pretreatment significantly reduced the drying time and energy consumption of MBF. Refined ANFIS structure modeled and predicted the drying process efficiently, and drying time contributed most significantly to the moisture ratio variability of MBF.
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13
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Influence of Convective and Vacuum-Type Drying on Quality, Microstructural, Antioxidant and Thermal Properties of Pretreated Boletus edulis Mushrooms. Molecules 2022; 27:molecules27134063. [PMID: 35807311 PMCID: PMC9268665 DOI: 10.3390/molecules27134063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 01/27/2023] Open
Abstract
Freshly harvested Boletus edulis mushrooms are subjected to rapid loss of quality due to the high moisture content and enzymatic activity. Drying time, quality characteristics, microstructural and thermal properties were studied in mushrooms ground to puree subjected to hot air drying (HAD), freeze drying (FD) and centrifugal vacuum drying (CVD). The influence of hot water blanching and UV-C pretreatments was additionally investigated. The rehydration ability of mushroom powders was improved by FD, especially without pretreatment or combined to UV-C exposure. The HAD and CVD, with no pretreatment or combined to UV-C, ensured good preservation of phenolics and antioxidant activity of dried mushrooms. The total difference in color of mushroom pigments extracted in acetone was lower in samples dried by CVD and higher in ones by FD. Blanching before HAD produced whiter product probably due to the reduced polyphenoloxidase activity. Scanning Electron Microscopy (SEM) analysis showed fewer physical changes in FD-samples. Heat-induced structural changes were noticed by Differential Scanning Calorimetry (DSC), Thermogravimetry (TG) and Derivative Thermogravimetry (DTG) analysis, in particular of biopolymers, confirmed by ATR-FTIR analysis. Based on our complex approach, the UV pretreatment of mushrooms could be a better alternative to water blanching. Centrifugal vacuum emerged as a new efficient drying method in terms of bioactive compounds, color and thermal stability, while FD led to better rehydration ability and microstructure.
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14
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Kayacan S, Sagdic O, Doymaz I, Karasu S. The effect of different drying methods on total bioactive properties, individual phenolic compounds, rehydration ability, color, and microstructural characteristics of Asian pear. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Selma Kayacan
- Faculty of Chemical and Metallurgical Engineering Department of Food Engineering Yildiz Technical University Istanbul Turkey
| | - Osman Sagdic
- Faculty of Chemical and Metallurgical Engineering Department of Food Engineering Yildiz Technical University Istanbul Turkey
| | - Ibrahim Doymaz
- Faculty of Chemical and Metallurgical Engineering Department of Chemical Engineering Yildiz Technical University Istanbul Turkey
| | - Salih Karasu
- Faculty of Chemical and Metallurgical Engineering Department of Food Engineering Yildiz Technical University Istanbul Turkey
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15
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Kaur S, Dhurve P, Arora VK. Statistical approach to investigate the effect of vibro‐fluidized bed drying on bioactive compounds of muskmelon (
Cucumis melo
) seeds. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Samandeep Kaur
- Department of Food Engineering National Institute of Food Technology Entrepreneurship and Management Sonipat India
| | - Priyanka Dhurve
- Department of Food Engineering National Institute of Food Technology Entrepreneurship and Management Sonipat India
| | - Vinkel Kumar Arora
- Department of Food Engineering National Institute of Food Technology Entrepreneurship and Management Sonipat India
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16
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Hot air convective drying of hog plum fruit ( Spondias mombin): effects of physical and edible-oil-aided chemical pretreatments on drying and quality characteristics. Heliyon 2021; 7:e08312. [PMID: 34805567 PMCID: PMC8586757 DOI: 10.1016/j.heliyon.2021.e08312] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/27/2021] [Accepted: 10/29/2021] [Indexed: 11/21/2022] Open
Abstract
This aim of this study was to evaluate the effects of pretreatments and temperature on the hot air drying characteristics of hog plum fruits. Hog plum fruits were pretreated with olive oil/K2CO3 or sunflower oil/K2CO3 at 28 °C and olive oil/NaOH cum blanching at 96 °C for 15s, hot water at 96 °C for 15s, and dried in a hot air drier at 50, 60, and 70 °C. Mathematical models were used to fit the data of drying and rehydration kinetics. Results showed that increase in temperature reduced drying time, increased effective diffusivity and shrinkage. Sunflower oil aided chemical pretreated sample had the shortest drying time (780 min) and highest effective diffusivity (6.3 × 10−8 m2/s) at 60 °C, faster rehydration ability at 60 °C, highest retention rate for ascorbic acid (15 %), phenolic content (29 %), and antioxidant activity (12.3 %), while olive oil aided chemical (K2CO3) pretreated sample had the shortest drying time at 50 °C (990 min) and 70 °C (600 min), lowest shrinkage (48.5 %), slower rehydration capacity at 40 °C, and lowest colour change (ΔE = 11.5). Modified Henderson and Pabis and Vega-Gálvez were superior to other fitting models in predicting the drying and rehydration kinetics. Sunflower oil/K2CO3 pretreatment could help improve the drying and quality characteristics of hog plum.
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17
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Yilmaz A, Alibas I, Asik BB. The effect of drying methods on the color, chlorophyll, total phenolic, flavonoids, and macro and micronutrients of thyme plant. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15915] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Aslihan Yilmaz
- Faculty of Agriculture Department of Biosystems Engineering Bursa Uludag University Bursa Turkey
| | - Ilknur Alibas
- Faculty of Agriculture Department of Biosystems Engineering Bursa Uludag University Bursa Turkey
| | - Baris Bulent Asik
- Faculty of Agriculture Department of Soil Science and Plant Nutrition Bursa Uludag University Bursa Turkey
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Combined Hot Air, Microwave, and Infrared Drying of Hawthorn Fruit: Effects of Ultrasonic Pretreatment on Drying Time, Energy, Qualitative, and Bioactive Compounds' Properties. Foods 2021; 10:foods10051006. [PMID: 34064476 PMCID: PMC8147953 DOI: 10.3390/foods10051006] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/19/2021] [Accepted: 04/29/2021] [Indexed: 01/09/2023] Open
Abstract
The present study aimed to examine the effect of ultrasonic pretreatment and hot air, microwave–hot-air, infrared–hot air, and freeze-drying on the drying time, specific energy (SE), qualitative properties (i.e., color, shrinkage, and rehydration ratio), and bioactive compounds’ properties (i.e., antioxidant activity, phenolic, and flavonoid contents) of hawthorn fruit. Drying of hawthorn was conducted from 45 min for the ultrasonic + microwave–hot-air drying to 1280 min for the freeze-drying method. The lowest amount of SE was obtained using the ultrasonic-microwave–hot-air drying method, which was 47.57 MJ/kg. The lowest values in color changes (12.25) and shrinkage (17.21%) were recorded for the freeze-drying method, while the highest amounts for these traits were 45.57% and 66.75% in the HA drying, respectively. In general, the use of different drying methods reduces the antioxidant capacity (AC), total phenolic content (TPC), and total flavonoid content (TFC) during processing compared to fresh samples. The highest values for AC, TPC, TFC, and the rehydration ratio were 30.69%, 73.07 mg-GAE/gdw, 65.93 mg-QE/gdw, and 2.02 for the freeze-drying method, respectively.
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