Analysis for Difficulty during Freeze-Drying Feizixiao Lychees

Compared to other cultivar lychees, volume density of Feizixiao lychee was higher due to serious shrinkage during freeze-drying (FD). Guiwei lychee and Nuomici lychee were used for comparison in order to illuminate the reason of the aforementioned phenomenon. Lower prefreezing temperature could not...

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Main Authors: L. L. Huang, F. Qiao, G. Peng, C. F. Fang
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Journal of Food Quality
Online Access:http://dx.doi.org/10.1155/2017/8359438
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author L. L. Huang
F. Qiao
G. Peng
C. F. Fang
author_facet L. L. Huang
F. Qiao
G. Peng
C. F. Fang
author_sort L. L. Huang
collection DOAJ
description Compared to other cultivar lychees, volume density of Feizixiao lychee was higher due to serious shrinkage during freeze-drying (FD). Guiwei lychee and Nuomici lychee were used for comparison in order to illuminate the reason of the aforementioned phenomenon. Lower prefreezing temperature could not improve the volume density of Feizixiao lychee. Microstructure results show that pulp cell of Feizixiao lychee (tail) was smaller and more compact than Guiwei and Nuomici lychee pulp cell. In addition, there is a membrane around the surface of Feizixiao lychee pulp. And the microstructure of Feizixiao lychee tip pulp cell is different from tail pulp cell. Membrane and tip pulp cell are both smaller and more compact than tail pulp cell. These structure differences hinder the moisture removing of Feizixiao lychee during FD. Removing the membrane and tip pulp could not improve the volume density of Feizixiao lychee. Ultrasound treatment for 30 min could significantly enhance the volume density of Feizixiao lychee.
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spelling doaj-art-2fd31a55b1e345cda06568df04e7a9e52025-08-20T02:07:56ZengWileyJournal of Food Quality0146-94281745-45572017-01-01201710.1155/2017/83594388359438Analysis for Difficulty during Freeze-Drying Feizixiao LycheesL. L. Huang0F. Qiao1G. Peng2C. F. Fang3School of Applied Chemistry and Biological Technology, Shenzhen Polytechnic, Shenzhen, Guangdong 518055, ChinaSchool of Applied Chemistry and Biological Technology, Shenzhen Polytechnic, Shenzhen, Guangdong 518055, ChinaSchool of Applied Chemistry and Biological Technology, Shenzhen Polytechnic, Shenzhen, Guangdong 518055, ChinaSchool of Applied Chemistry and Biological Technology, Shenzhen Polytechnic, Shenzhen, Guangdong 518055, ChinaCompared to other cultivar lychees, volume density of Feizixiao lychee was higher due to serious shrinkage during freeze-drying (FD). Guiwei lychee and Nuomici lychee were used for comparison in order to illuminate the reason of the aforementioned phenomenon. Lower prefreezing temperature could not improve the volume density of Feizixiao lychee. Microstructure results show that pulp cell of Feizixiao lychee (tail) was smaller and more compact than Guiwei and Nuomici lychee pulp cell. In addition, there is a membrane around the surface of Feizixiao lychee pulp. And the microstructure of Feizixiao lychee tip pulp cell is different from tail pulp cell. Membrane and tip pulp cell are both smaller and more compact than tail pulp cell. These structure differences hinder the moisture removing of Feizixiao lychee during FD. Removing the membrane and tip pulp could not improve the volume density of Feizixiao lychee. Ultrasound treatment for 30 min could significantly enhance the volume density of Feizixiao lychee.http://dx.doi.org/10.1155/2017/8359438
spellingShingle L. L. Huang
F. Qiao
G. Peng
C. F. Fang
Analysis for Difficulty during Freeze-Drying Feizixiao Lychees
Journal of Food Quality
title Analysis for Difficulty during Freeze-Drying Feizixiao Lychees
title_full Analysis for Difficulty during Freeze-Drying Feizixiao Lychees
title_fullStr Analysis for Difficulty during Freeze-Drying Feizixiao Lychees
title_full_unstemmed Analysis for Difficulty during Freeze-Drying Feizixiao Lychees
title_short Analysis for Difficulty during Freeze-Drying Feizixiao Lychees
title_sort analysis for difficulty during freeze drying feizixiao lychees
url http://dx.doi.org/10.1155/2017/8359438
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AT fqiao analysisfordifficultyduringfreezedryingfeizixiaolychees
AT gpeng analysisfordifficultyduringfreezedryingfeizixiaolychees
AT cffang analysisfordifficultyduringfreezedryingfeizixiaolychees