Mechanism of the quality and molding pressure of green brick tea based on in-mold steaming process

doi:10.14088/j.cnki.issn0439-8114.2019.23.024

Abstract

Abstract: Taking 130 g green brick tea as an example, samples were made under different molding pressures. The appearance sensory analysis of the samples shows that when the pressure on the brick surface is greater than 6 MPa, the shape of the tea brick is better. With the further increase of the pressure, the forming effect is further optimized. Near infrared spectroscopy analysis shows that the appearance of finished bricks was significantly different under five different treatments. The results of chemical composition analysis shows that the total water extract of finished bricks increased with the increase of molding pressure, and the inflection point appeared at 18 MPa. The relationship between catechin content and pressure was not significant. The comprehensive results show that the optimal forming pressure of high quality brick tea is 12 MPa, which provides a theoretical basis for the mould design and new products development.

Key words: green brick tea, molding pressure, quality, mold steaming

CLC Number:

TB121

TENG Jing, GONG Zi-ming, TU Xiu-liang, WANG Sheng-peng, LIU Pan-pan, ZHENG Peng-cheng, GAO Shi-wei. Mechanism of the quality and molding pressure of green brick tea based on in-mold steaming process[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(23): 112-115.

References 13

[1]	金心怡. 茶叶加工工程[M].北京:中国农业出版社,2014.
[2]	成洲. 茶叶加工技术[M].北京:中国轻工业出版社,2015.
[3]	郑鹏程,龚自明,王胜鹏,等.青砖茶加工工艺及展望[J].中国茶叶加工,2017(2):46-49
[4]	夏涛. 制茶学[M].北京:中国农业出版社,2016.
[5]	滕靖,龚自明,高士伟,等.一种小饼茶自动化压制成型设备及其压制成型工艺过程:中国,ZL201310304897.2[P].2015-05-13.
[6]	徐仲溪,刘德华,高代珍,等.压制工艺技术及原料成分对沱茶成型的影响[J].湖南农业大学学报,2004,30(4):42-44.
[7]	卢光贤,王立伦.机床液压传动与控制[M].西安:西北工业大学出版社,1999.
[8]	龚自明,滕靖,郑鹏程,等.一种茶叶压制成型设备及茶叶压制成型工艺过程:中国,ZL201310304977.8[P].2014-10-15.
[9]	施兆鹏. 茶叶审评与检验[M].北京:中国农业出版社,2010.
[10]	王胜鹏,龚自明,高士伟,等.基于近红外光谱技术的恩施玉露茶保存年份的快速无损鉴别[J].华中农业大学学报,2015, 34(5):111-114.
[11]	陈寿松,郑功宇,金心怡,等.茶叶含水率近红外在线快速测定及其应用研究[J].茶叶科学2014,34(4):337-343.
[12]	周小芬,叶阳,陈芃,等.近红外光谱技术在茶叶品质评价中的研究与应用[J].食品工业科技,2012,33(5):413-417
[13]	胡爱华,敖晓琳,蒲彪,等.不同发酵度茶叶的主要理化及香气成分分析[J].食品与生物技术学报,2017,36(12):1283-1289.

[1]	WAN Xue-ji, GONG Ping, YANG Yu, TONG Xin-hong, LI Zhong-xin, YU Ting, YE Sheng-qiang, CHEN Xing, WANG Li-xia, LING Ming-hu, CHEN Jie, QIAN Yun-guo. Effects of Bacillus complex on fecal microbial flora and egg quality of laying hens [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(9): 98-101.
[2]	ZHAO Jian-kun, YANG Yuan-tong, LI Xian-jun, SHEN Yue, WANG Zong-ying. Research on the contribution of green food to the green development of agriculture [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(9): 185-189.
[3]	WU Qun-ying, MA Shao-peng, BI Yin-li, GAO Ya-kun, ZHOU Hui-li, ZHANG Long-jie. Effect of inoculation of arbuscular mycorrhizal fungi on growth and quality of pea in subsidence area of coal mining in northern Shaanxi [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(8): 32-35.
[4]	ZHANG Li-juan, CHEN Jun-ying, QIN Yu-kun, WANG Yu-ping, CHENG Hui-huang, XIA Shao-nan. Effects of chemical capping agent on direct cotton after rape [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(8): 36-40.
[5]	WANG Chong, ZHAI Xu-jun. Research on the quality evaluation of new urbanization development in Heilongjiang province based on entropy method [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(8): 157-161.
[6]	GUO Li, ZHU Fei-xue, KOU Yan-ling, JIA Wen-qing. Effects of different light quality on adventitious bud induction of peony Wulongpengsheng [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(7): 84-86.
[7]	WANG Ye-zi, ZHANG Ying, ZHOU Qi, GAN Guo-ping, TAN Zhong-chuan, ZHANG Yan-miao. Quality standard of compound BuQi oral liquid [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(7): 106-109.
[8]	HUANG Li-dan, HUANG Xu-guang, ZHAO Jian-wen, JIANG Li-fu, QIN Ling, YANG Si-xia, LU Yan-song, ZHONG Qiong-qiong, HUANG Ling-pu, HUO Xing. Evaluation on soil quality of newly-established urban green space in Nanning city [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(6): 36-41.
[9]	XIONG You-ping. Research on the high quality development path of global tourism under the background of culture and tourism integration：Taking Nanxun district of Huzhou city as an example [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(6): 189-192.
[10]	HUANG Wu-fei. Research on the quality management of PDCA cycle in new rural housing construction [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(4): 144-147.
[11]	SONG Mei, BUKA Ouerna, HUANG Min. Effect of “chang” shape training system on yield, quality and economic benefit of table grape in Kuitun area of Xinjiang [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(3): 75-78.
[12]	LI Jin-zhou, CHEN Zi-jun, LIU Wen-jun, LU Hui-min, LIN Yu-gang, WEI Jiang-cun, CHEN Yong. Experimental study on quality control of Yaobath powder [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(3): 129-133.
[13]	LU Xing-hua, LIU Pei-hao, ZHANG Hao. Research on meat pigeon food quality control system based on the perspective of production chain [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(3): 145-148.
[14]	DUAN Bin, HU Yang, HE Shi-jie, WANG Qing-lin, LI Hui-long, SONG Xiao-hua, CHEN Long, FANG Ling. Effects of sowing dates on the growth process, yield and rice quality of Zhenzhunuo [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(2): 20-24.
[15]	YUE Hui-xin, CHEN Di-xin, WU Hao, FU Han-jun, YANG Ying-jun. Quality and benefit analysis of cherry facilities and open-field cultivation in Luoyang [J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(2): 93-95.