{"title":"外层玻璃壳的形成阻碍了海藻糖液滴的干燥。","authors":"G Pei, Y Zhang, P Zhou, C Gao","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Airflow drying of mammalian cells has not been successful yet, with one obstacle being the improper drying time of cells-laden trehalose droplets.</p><p><strong>Objective: </strong>To evaluate the major factors affecting the drying kinetics of aqueous trehalose droplets.</p><p><strong>Materials and methods: </strong>A numerical analysis was applied to the evaporation behavior of aqueous trehalose droplets for the preservation of biomaterials. Factors such as convection caused by droplet contraction, vapor diffusion, and Stefan flow around droplets were taken into account in the analysis.</p><p><strong>Results: </strong>Reducing the size and initial concentration of the droplets helps to achieve rapid drying of droplets. Forced convection can effectively enhance the initial drying rate of droplets, which may mitigate cell damage caused by hypertonic solutions. Upon drying, however, the rapid formation of an outer glassy shell inhibits the further drying of trehalose droplets.</p><p><strong>Conclusion: </strong>Simple enhancement of convection does not facilitate complete droplet vitrification due to the formation of an outer glassy shell that prevents water movement. https://doi.org/10.54680/fr25210110712.</p>","PeriodicalId":10937,"journal":{"name":"Cryo letters","volume":"46 2","pages":"92-97"},"PeriodicalIF":0.9000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Formation of an outer glassy shell hinders the drying of trehalose droplets.\",\"authors\":\"G Pei, Y Zhang, P Zhou, C Gao\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Airflow drying of mammalian cells has not been successful yet, with one obstacle being the improper drying time of cells-laden trehalose droplets.</p><p><strong>Objective: </strong>To evaluate the major factors affecting the drying kinetics of aqueous trehalose droplets.</p><p><strong>Materials and methods: </strong>A numerical analysis was applied to the evaporation behavior of aqueous trehalose droplets for the preservation of biomaterials. Factors such as convection caused by droplet contraction, vapor diffusion, and Stefan flow around droplets were taken into account in the analysis.</p><p><strong>Results: </strong>Reducing the size and initial concentration of the droplets helps to achieve rapid drying of droplets. Forced convection can effectively enhance the initial drying rate of droplets, which may mitigate cell damage caused by hypertonic solutions. Upon drying, however, the rapid formation of an outer glassy shell inhibits the further drying of trehalose droplets.</p><p><strong>Conclusion: </strong>Simple enhancement of convection does not facilitate complete droplet vitrification due to the formation of an outer glassy shell that prevents water movement. https://doi.org/10.54680/fr25210110712.</p>\",\"PeriodicalId\":10937,\"journal\":{\"name\":\"Cryo letters\",\"volume\":\"46 2\",\"pages\":\"92-97\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cryo letters\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cryo letters","FirstCategoryId":"99","ListUrlMain":"","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOLOGY","Score":null,"Total":0}
Formation of an outer glassy shell hinders the drying of trehalose droplets.
Background: Airflow drying of mammalian cells has not been successful yet, with one obstacle being the improper drying time of cells-laden trehalose droplets.
Objective: To evaluate the major factors affecting the drying kinetics of aqueous trehalose droplets.
Materials and methods: A numerical analysis was applied to the evaporation behavior of aqueous trehalose droplets for the preservation of biomaterials. Factors such as convection caused by droplet contraction, vapor diffusion, and Stefan flow around droplets were taken into account in the analysis.
Results: Reducing the size and initial concentration of the droplets helps to achieve rapid drying of droplets. Forced convection can effectively enhance the initial drying rate of droplets, which may mitigate cell damage caused by hypertonic solutions. Upon drying, however, the rapid formation of an outer glassy shell inhibits the further drying of trehalose droplets.
Conclusion: Simple enhancement of convection does not facilitate complete droplet vitrification due to the formation of an outer glassy shell that prevents water movement. https://doi.org/10.54680/fr25210110712.
期刊介绍：
A bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation
The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.
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