Pub Date : 2023-08-10DOI: 10.1080/07373937.2023.2243495
Nora Alina Ruprecht, R. Kohlus
Abstract Protein denaturation during spray drying is critical for high-quality food powders. This study investigated the influence of particle size on protein denaturation using phycocyanin as a marker. The effect of particle size was investigated at three different air outlet temperatures, with the inlet air temperature held constant. For each temperature combination, different nozzles were utilized to obtain varying particle sizes. Denaturation increased with higher outlet air temperature and larger particle size, up to a size of 40 μm. This increase in denaturation with particle size was attributed to faster drying rates and the absence of denaturation once particles are dry. Particle size had a similar magnitude of effect as outlet air temperature. For larger particles, a plateau in denaturation was observed due to a prolonged constant drying rate regime. It can be assumed that conditions that retain phycocyanin are also suited for the retention for less thermolabile proteins.
{"title":"Thermal damages in spray drying: Particle size-dependent protein denaturation using phycocyanin as model substrate","authors":"Nora Alina Ruprecht, R. Kohlus","doi":"10.1080/07373937.2023.2243495","DOIUrl":"https://doi.org/10.1080/07373937.2023.2243495","url":null,"abstract":"Abstract Protein denaturation during spray drying is critical for high-quality food powders. This study investigated the influence of particle size on protein denaturation using phycocyanin as a marker. The effect of particle size was investigated at three different air outlet temperatures, with the inlet air temperature held constant. For each temperature combination, different nozzles were utilized to obtain varying particle sizes. Denaturation increased with higher outlet air temperature and larger particle size, up to a size of 40 μm. This increase in denaturation with particle size was attributed to faster drying rates and the absence of denaturation once particles are dry. Particle size had a similar magnitude of effect as outlet air temperature. For larger particles, a plateau in denaturation was observed due to a prolonged constant drying rate regime. It can be assumed that conditions that retain phycocyanin are also suited for the retention for less thermolabile proteins.","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47931509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractLong processing time represents a serious challenge in hot air drying since it led to high energy consumption and quality deterioration. A synergistic pretreatment of artificial perforation and alcohol maceration (PAT) was proposed in this study to improve hot air drying of garlic. Samples without pretreated, perforated, and subjected to alcohol pretreatments were used as control. The results showed that PAT pretreatment significantly reduced the drying time and energy consumed by 36.67%. Analysis showed that the mechanisms underlying the highest drying rate of PAT pretreated sample included pre-dehydration, capillary flow promotion and cell permeability enhancement. Samples pretreated with PAT exhibited the highest whiteness value, minimum shrinkage, lowest brittleness, and especially the highest content of volatile components, which is essential for its application as a spice. The antioxidant activity, total phenolics and allicin content were low in the PAT samples compared with other samples. This study provides a simple and effective approach to improve the drying of garlic.Keywords: Garlichot air dryingperforation synergistic alcohol pretreatmentdrying timequality Additional informationFundingThe authors are grateful for the support provided by the Zhejiang provincial top discipline of biological engineering (Level A) open fund (KF2022002), Ningbo public welfare science and technology plan project (2022S142, 2022S152), and the Jiangsu Funding Program for Excellent Postdoctoral Talent (2022ZB674).
{"title":"Improving the hot air drying of garlic slices by perforation synergistic alcohol pretreatment","authors":"Yabin Feng, Kui Suo, Liqiang Chen, Hafida Wahia, Cunshan Zhou, Zhenfeng Yang, Xianhui Chang, Liyu Shi, Wei Chen, Chunbo Song, Saisai Li","doi":"10.1080/07373937.2023.2217252","DOIUrl":"https://doi.org/10.1080/07373937.2023.2217252","url":null,"abstract":"AbstractLong processing time represents a serious challenge in hot air drying since it led to high energy consumption and quality deterioration. A synergistic pretreatment of artificial perforation and alcohol maceration (PAT) was proposed in this study to improve hot air drying of garlic. Samples without pretreated, perforated, and subjected to alcohol pretreatments were used as control. The results showed that PAT pretreatment significantly reduced the drying time and energy consumed by 36.67%. Analysis showed that the mechanisms underlying the highest drying rate of PAT pretreated sample included pre-dehydration, capillary flow promotion and cell permeability enhancement. Samples pretreated with PAT exhibited the highest whiteness value, minimum shrinkage, lowest brittleness, and especially the highest content of volatile components, which is essential for its application as a spice. The antioxidant activity, total phenolics and allicin content were low in the PAT samples compared with other samples. This study provides a simple and effective approach to improve the drying of garlic.Keywords: Garlichot air dryingperforation synergistic alcohol pretreatmentdrying timequality Additional informationFundingThe authors are grateful for the support provided by the Zhejiang provincial top discipline of biological engineering (Level A) open fund (KF2022002), Ningbo public welfare science and technology plan project (2022S142, 2022S152), and the Jiangsu Funding Program for Excellent Postdoctoral Talent (2022ZB674).","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-01DOI: 10.1080/07373937.2023.2241899
C. Lee, Seungju Oh
Abstract This study aimed to investigate the effect of drying conditions on the strength properties of larch boards after vacuum heat treatment, using leftover boards from a previous study that were dried by four methods: conventional kiln drying, high-temperature drying, radio-frequency/vacuum-press (RF/VP) drying, and hot-air/vacuum drying. The boards were then heat-treated and tested for moisture content, density, bending strength, compressive strength, and tensile strength. The results showed that the drying method significantly affected the strength properties of the larch boards after vacuum heat treatment. After vacuum heat treatment, density increased in hot-air/vacuum drying and RF/VP drying, while bending strength was higher in high-temperature drying and hot-air/vacuum drying, and tensile strength was higher in hot-air/vacuum drying. Conditioning treatment after vacuum heat treatment had an impact on the decrease in density in RF/VP drying, the decrease in bending strength in hot-air/vacuum drying, and the increase in tensile strength in high-temperature drying. The drying method is a crucial factor in determining the chemical changes that occur during heat treatment, as it establishes the physical and chemical properties of the wood prior to treatment. Variations in these properties can result in different chemical transformations during the heat treatment process. Therefore, to minimize any adverse impact on the strength properties of the wood, it is necessary to carefully select an appropriate drying method before heat treatment.
{"title":"Effect of the drying condition on the strength properties of Japanese larch board after vacuum heat treatment","authors":"C. Lee, Seungju Oh","doi":"10.1080/07373937.2023.2241899","DOIUrl":"https://doi.org/10.1080/07373937.2023.2241899","url":null,"abstract":"Abstract This study aimed to investigate the effect of drying conditions on the strength properties of larch boards after vacuum heat treatment, using leftover boards from a previous study that were dried by four methods: conventional kiln drying, high-temperature drying, radio-frequency/vacuum-press (RF/VP) drying, and hot-air/vacuum drying. The boards were then heat-treated and tested for moisture content, density, bending strength, compressive strength, and tensile strength. The results showed that the drying method significantly affected the strength properties of the larch boards after vacuum heat treatment. After vacuum heat treatment, density increased in hot-air/vacuum drying and RF/VP drying, while bending strength was higher in high-temperature drying and hot-air/vacuum drying, and tensile strength was higher in hot-air/vacuum drying. Conditioning treatment after vacuum heat treatment had an impact on the decrease in density in RF/VP drying, the decrease in bending strength in hot-air/vacuum drying, and the increase in tensile strength in high-temperature drying. The drying method is a crucial factor in determining the chemical changes that occur during heat treatment, as it establishes the physical and chemical properties of the wood prior to treatment. Variations in these properties can result in different chemical transformations during the heat treatment process. Therefore, to minimize any adverse impact on the strength properties of the wood, it is necessary to carefully select an appropriate drying method before heat treatment.","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45626709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-26DOI: 10.1080/07373937.2023.2237572
Phatchareephon Niroka, Gunn Panprayun, Piangjai Peerakiatkhajohn, Preeyaporn Koedrith, T. Stewart, N. Ketjoy
Abstract The development of a solar greenhouse dryer combined with an anaerobic digester for biogas production can reduce carbon emissions and create zero waste. This paper presents the performance of a solar greenhouse biogas dryer (SGBD) that burns biogas to supplement the drying of water hyacinth. The SGBD has an overall efficiency of 87% for 100 kg of fresh water hyacinth. The auxiliary heating system enabled the SGBD to achieve drying temperatures of 24.5 to 45.0 degrees during cloudy and rainy days and produce high quality dried products. There was a fivefold increase in drying capacity and a reduction in drying time of six hours (38%) using the SGBD. End users of the dried product judged it to have improved consistency in color and shape. The SGBD cost less than US$3800 to build with a payback period of five months. This design demonstrates a low-cost and simple technology for small businesses.
{"title":"Performance of a solar greenhouse-biogas hybrid dryer for dehydration of water hyacinth (Eichhornia crassipes)","authors":"Phatchareephon Niroka, Gunn Panprayun, Piangjai Peerakiatkhajohn, Preeyaporn Koedrith, T. Stewart, N. Ketjoy","doi":"10.1080/07373937.2023.2237572","DOIUrl":"https://doi.org/10.1080/07373937.2023.2237572","url":null,"abstract":"Abstract The development of a solar greenhouse dryer combined with an anaerobic digester for biogas production can reduce carbon emissions and create zero waste. This paper presents the performance of a solar greenhouse biogas dryer (SGBD) that burns biogas to supplement the drying of water hyacinth. The SGBD has an overall efficiency of 87% for 100 kg of fresh water hyacinth. The auxiliary heating system enabled the SGBD to achieve drying temperatures of 24.5 to 45.0 degrees during cloudy and rainy days and produce high quality dried products. There was a fivefold increase in drying capacity and a reduction in drying time of six hours (38%) using the SGBD. End users of the dried product judged it to have improved consistency in color and shape. The SGBD cost less than US$3800 to build with a payback period of five months. This design demonstrates a low-cost and simple technology for small businesses.","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49433373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-26DOI: 10.1080/07373937.2023.2236197
Lijie Qiao, Jixian Dong, Kunliang Zhang, Xiangquan Chen, Zhuozhi Yang, Huan Liu, Sha Wang, Yan Dong, Meng An
Abstract The condensation heat transfer coefficient of the multi-channel dryer, one of the key component of paper-making machine, directly determines the efficiency of heat energy utilization. However, the prediction of condensation heat transfer coefficient remains a challenge because the heat transfer characteristics in multi-channel dryer is a complex fundamental issue involving the thermal behavior of two-phase fluid systems. Herein, we successfully developed the four supervised machine learning models to predict the heat transfer coefficient of a multi-channel cylinder dryer under different working conditions. The multi-channel cylinder dryer experiments under different steam mass flux and cooling water mass flow rates were performed and the measured data is used as the input data for training. Interestingly, the four trained Bayesian-optimized machine models present the excellent capability of prediction for condensation heat transfer coefficient of multi-channel cylinder dryer, where the values of R 2 for tested Bayesian-optimized-based SVR, ANN, linear SVR, and RF are 0.983, 0.997, 0.996, and 0.953, respectively. In addition, the feature importance of descriptors is quantified based on a random forest algorithm. Our study suggests that machine learning models can effectively predict the condensate heat transfer coefficient of two-phase fluid systems, which not only would be beneficial to optimizing the structures and operation parameters of multi-channel cylinder dryer in the industry but to develop a reasonable correlation of heat transfer coefficient in fundamental research.
{"title":"Experimental study on condensate heat transfer coefficient of multi-channel cylinder dryer integrated with Bayesian-optimized machine learning prediction","authors":"Lijie Qiao, Jixian Dong, Kunliang Zhang, Xiangquan Chen, Zhuozhi Yang, Huan Liu, Sha Wang, Yan Dong, Meng An","doi":"10.1080/07373937.2023.2236197","DOIUrl":"https://doi.org/10.1080/07373937.2023.2236197","url":null,"abstract":"Abstract The condensation heat transfer coefficient of the multi-channel dryer, one of the key component of paper-making machine, directly determines the efficiency of heat energy utilization. However, the prediction of condensation heat transfer coefficient remains a challenge because the heat transfer characteristics in multi-channel dryer is a complex fundamental issue involving the thermal behavior of two-phase fluid systems. Herein, we successfully developed the four supervised machine learning models to predict the heat transfer coefficient of a multi-channel cylinder dryer under different working conditions. The multi-channel cylinder dryer experiments under different steam mass flux and cooling water mass flow rates were performed and the measured data is used as the input data for training. Interestingly, the four trained Bayesian-optimized machine models present the excellent capability of prediction for condensation heat transfer coefficient of multi-channel cylinder dryer, where the values of R 2 for tested Bayesian-optimized-based SVR, ANN, linear SVR, and RF are 0.983, 0.997, 0.996, and 0.953, respectively. In addition, the feature importance of descriptors is quantified based on a random forest algorithm. Our study suggests that machine learning models can effectively predict the condensate heat transfer coefficient of two-phase fluid systems, which not only would be beneficial to optimizing the structures and operation parameters of multi-channel cylinder dryer in the industry but to develop a reasonable correlation of heat transfer coefficient in fundamental research.","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43551242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-25DOI: 10.1080/07373937.2023.2238089
Yanlun Ren, X. Wang, Hong Xu, Li Zhang
Abstract The drying process significantly influences the dispersion of metals, physical properties, and performance of monolithic catalysts. In this research, a cordierite-based monolithic catalyst with Co/γ-Al2O3 was prepared using the slurry and impregnation method. The impact of ambient humidity on metal dispersion, mass transfer performance, and catalytic performance was investigated. The findings revealed distinct crystallization-deliquescence curves in the saturated impregnated monolithic catalysts, with alternating crystallization and deliquescence phenomena occurring as the ambient humidity changed. When the coating adhesion was high, the simultaneous occurrence of internal crystallization and surface dissolution resulted in concentrated internal stress, which facilitated the micro-stripping of the coating, leading to the formation of a cobweb-like microstructure. This process affected the distribution of pore sizes and enhanced mass transfer performance. The Co-based catalysts prepared in this study demonstrated a high selectivity for C5+ products (73.93%) when employed in the Fischer-Tropsch synthesis reaction. This research offers an optimization strategy for catalyst preparation, aiming to develop monolithic catalysts with low melting points, high crystallinity, and supersaturated supported transition metals.
{"title":"Mass transfer enhancement and drying mechanism of high adhesion saturated impregnated Co-Al2O3 monolithic catalyst","authors":"Yanlun Ren, X. Wang, Hong Xu, Li Zhang","doi":"10.1080/07373937.2023.2238089","DOIUrl":"https://doi.org/10.1080/07373937.2023.2238089","url":null,"abstract":"Abstract The drying process significantly influences the dispersion of metals, physical properties, and performance of monolithic catalysts. In this research, a cordierite-based monolithic catalyst with Co/γ-Al2O3 was prepared using the slurry and impregnation method. The impact of ambient humidity on metal dispersion, mass transfer performance, and catalytic performance was investigated. The findings revealed distinct crystallization-deliquescence curves in the saturated impregnated monolithic catalysts, with alternating crystallization and deliquescence phenomena occurring as the ambient humidity changed. When the coating adhesion was high, the simultaneous occurrence of internal crystallization and surface dissolution resulted in concentrated internal stress, which facilitated the micro-stripping of the coating, leading to the formation of a cobweb-like microstructure. This process affected the distribution of pore sizes and enhanced mass transfer performance. The Co-based catalysts prepared in this study demonstrated a high selectivity for C5+ products (73.93%) when employed in the Fischer-Tropsch synthesis reaction. This research offers an optimization strategy for catalyst preparation, aiming to develop monolithic catalysts with low melting points, high crystallinity, and supersaturated supported transition metals.","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48838970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-25DOI: 10.1080/07373937.2023.2239655
A. Mujumdar
{"title":"Second special issue commemorating four decades of Drying Technology","authors":"A. Mujumdar","doi":"10.1080/07373937.2023.2239655","DOIUrl":"https://doi.org/10.1080/07373937.2023.2239655","url":null,"abstract":"","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49597345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-25DOI: 10.1080/07373937.2023.2228879
A. Hussan, D. Levacher, S. Mezazigh
Abstract Whether driven by the need to dispose of contaminated sediment, a reduction in the size of confined disposal areas, or a lack of land adjacent to dredge sites, dewatering practices have gained prominence over the past few years. It is necessary to dewater these dredged sediments so that they can be used for beneficial purposes, such as industrial or construction backfill material. This study explores the natural dewatering method that reduces the water content of dredged sediment through evaporation and drainage. This research implemented two types of dredged sediments from different origins to determine the effects of sediment type on both evaporations as well as dredging. First, the effects of diameter on the rate of evaporation (ROE) and the potential of evaporation (POE) were investigated. The measured POE was then compared to the predicted POE using Rohwer’s and Penman’s models. In order to improve the handling of these dredged sediments prior to beginning the valorization process, a correlation between the decrease in water content and the increase in shear strength is discussed. This research will improve the handling of these sediments for transportation and indirect management of dredged sediment valorization.
{"title":"Investigation of natural dewatering of dredged sediments incorporating evaporation and drainage","authors":"A. Hussan, D. Levacher, S. Mezazigh","doi":"10.1080/07373937.2023.2228879","DOIUrl":"https://doi.org/10.1080/07373937.2023.2228879","url":null,"abstract":"Abstract Whether driven by the need to dispose of contaminated sediment, a reduction in the size of confined disposal areas, or a lack of land adjacent to dredge sites, dewatering practices have gained prominence over the past few years. It is necessary to dewater these dredged sediments so that they can be used for beneficial purposes, such as industrial or construction backfill material. This study explores the natural dewatering method that reduces the water content of dredged sediment through evaporation and drainage. This research implemented two types of dredged sediments from different origins to determine the effects of sediment type on both evaporations as well as dredging. First, the effects of diameter on the rate of evaporation (ROE) and the potential of evaporation (POE) were investigated. The measured POE was then compared to the predicted POE using Rohwer’s and Penman’s models. In order to improve the handling of these dredged sediments prior to beginning the valorization process, a correlation between the decrease in water content and the increase in shear strength is discussed. This research will improve the handling of these sediments for transportation and indirect management of dredged sediment valorization.","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46028451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-19DOI: 10.1080/07373937.2023.2235602
T. Chumroenphat, A. Bunyatratchata, S. Siriamornpun
Abstract Lepisanthes rubiginosa (Roxb.) Leenh (LRL), a wild fruit of Thailand, was characterized for phytochemicals including phenolic acids, flavonoids, carotenoids, anthocyanins, organic acids, and sugars. To process it, three drying methods were investigated, namely, freeze drying (FD), hot-air drying (HD), and sun drying (SD), which affected chemical components and antioxidant activities. The predominant phenolic acids and flavonoids were p-hydroxybenzoic acid, chlorogenic acid, vanillic acid, quercetin, rutin, and myricetin. Remarkably high amounts of lycopene (158 mg/100g db) and cyanidin-3-O-glucoside (2005 mg/100g db) were observed. Flavonoids, carotenoids, and anthocyanin were decreased by all drying methods. Overall, FD was considered to be the most suitable for drying LRL fruit. Fructose conversion to mannitol during drying was explored by FTIR spectroscopy analysis in FD and HD samples. This study has revealed new information about LRL fruits, which could be a potential source of bioactive compounds; an appropriate drying method is suggested for further applications.
{"title":"Under-utilized wild fruit Lepisanthes rubiginosa (Roxb.) Leenh: A discovery of novel lycopene and anthocyanin source and bioactive compound profile changes associated with drying conditions","authors":"T. Chumroenphat, A. Bunyatratchata, S. Siriamornpun","doi":"10.1080/07373937.2023.2235602","DOIUrl":"https://doi.org/10.1080/07373937.2023.2235602","url":null,"abstract":"Abstract Lepisanthes rubiginosa (Roxb.) Leenh (LRL), a wild fruit of Thailand, was characterized for phytochemicals including phenolic acids, flavonoids, carotenoids, anthocyanins, organic acids, and sugars. To process it, three drying methods were investigated, namely, freeze drying (FD), hot-air drying (HD), and sun drying (SD), which affected chemical components and antioxidant activities. The predominant phenolic acids and flavonoids were p-hydroxybenzoic acid, chlorogenic acid, vanillic acid, quercetin, rutin, and myricetin. Remarkably high amounts of lycopene (158 mg/100g db) and cyanidin-3-O-glucoside (2005 mg/100g db) were observed. Flavonoids, carotenoids, and anthocyanin were decreased by all drying methods. Overall, FD was considered to be the most suitable for drying LRL fruit. Fructose conversion to mannitol during drying was explored by FTIR spectroscopy analysis in FD and HD samples. This study has revealed new information about LRL fruits, which could be a potential source of bioactive compounds; an appropriate drying method is suggested for further applications.","PeriodicalId":11374,"journal":{"name":"Drying Technology","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43368782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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