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THE FFECT OF DIFFERENT HEATING PATTERNS ON VACUUM FREEZE DRYING OF LITCHI PULP


Three heating patterns, constant temperature, temperature programmed and programmed cooling process were applied to freeze dry (FD) the litchi pulp in order to obtain the optimal FD heating method. The results show that the three patterns all could be used to freeze dry litchi pulp while the appearance was maintained well. The drying time of FD litchi pulp using programmed cooling process was the shortest among the three optimal heating patterns. The drying time was reduced by 15.8% and 11.6% comparing that of FD using constant temperature and temperature programmed.Higher temperature can be applied at the first primary drying stage and at secondary drying stage but should not be used at the later primary drying stage.......

【作者名称】: FANG Changfa, QIAO Fang, HUANG Luelue, GU Yaping, ZHANG Xiangyang, ZHANG Shufei
【作者单位】: shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China, shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China, shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China, ShenZhen Inspection Station of Non-Pollution Agricultural ProductsFutian,Shenzhen,518040,China, shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China, shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China
【关 键 词】: Freeze-Drying, Heating patterns, Litchi (Litchi chinensis sonn.)
【会议名称】: Proceedings of the 7th Asia-Pacific drying conference
【期刊论文数据库】: [DBS_Articles_01]
【期刊论文编号】: 101,177,321
【摘要长度】: 728
【会议地点】: Tianjin(CN)
【会议组织】: shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China;shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China;shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China;ShenZhen Inspection Station of Non-Pollution Agricultural ProductsFutian,Shenzhen,518040,China;shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China;shenzhen polytechnic,Liuxian Road,Nanshan,Shenzhen,518055,China;
【会议时间】: 2011
【上篇论文】: 外文会议 - ACOUSTIC BASED RAPID BLOWOUT MITIGATION IN A SWIRL STABILIZED COMBUSTOR
【下篇论文】: 外文会议 - DEHYDRATION EHYDRATION KINETICS OF PERSIAN PISTACHIO NUTS (PISTACIA VERA I.)

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