Comparison of quality of Hawk tea (Litsea coreana var. sinensis) in four counties of Guizhou Province

doi:10.3969/j.issn.1004-1524.2021.01.17

Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (1): 142-149.DOI: 10.3969/j.issn.1004-1524.2021.01.17

• Food Science • Previous Articles Next Articles

Comparison of quality of Hawk tea (Litsea coreana var. sinensis) in four counties of Guizhou Province

WANG Yuxin¹(), DENG Yanli¹, YAO Songlin², WANG Ying², WANG Jihong²^,^*()

1. College of Tea Science, Guizhou University, Guiyang 550025, China
2. Guizhou Institute of Biology, Guiyang 550009, China

Received:2020-08-18 Online:2021-01-25 Published:2021-01-25
Contact: WANG Jihong

Abstract

Abstract:

In order to compare the physical and chemical quality of Hawk tea (Litsea coreana var. sinensis) in four counties of Guizhou Province, the biochemical compositions and mineral elements of the Hawk tea processed in four counties of Guizhou Province were determined according to the traditional iron pot and slow fire drying process. The results showed that the content of biochemical compositions of Jiangkou Hawk tea was higher, especially the highest content of total flavonoid and the better quality; However, its heavy metal lead content exceeded the standard, which did not meet the requirements. Content of biochemical compositions of Xifeng sample was also high with the highest content of tea polyphenol and water extract,and the total flavone content was next to Jiangkou sample. The content of trace elements zinc, magnesium and selenium were also high and the content of heavy metals met the national standards with good quality, too. Moreover, Jiangkou Hawk tea had the most kinds of amino acid components; Meitan sample had the least kind of amino acid components; Chishui sample had a high content of trace metal elements and contained caffeine, and had a high content of amino acid with fresh taste, which was specific. The four Hawk tea in different counties in Guizhou Province had different characteristics in physical and chemical quality.

Key words: Hawk tea, Litsea coreana var. sinensis, total flavonoid, biochemical composition, mineral element

CLC Number:

S571.1

WANG Yuxin, DENG Yanli, YAO Songlin, WANG Ying, WANG Jihong. Comparison of quality of Hawk tea (Litsea coreana var. sinensis) in four counties of Guizhou Province[J]. Acta Agriculturae Zhejiangensis, 2021, 33(1): 142-149.

Figures/Tables 4

References 36

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县域 County	水浸出物 Water extract/%	灰分 Ash/(g· 100g^-1)	蛋白质 Protein/(g· 100g^-1)	粗脂肪 Crude fat/ (g·100g^-1)	可溶性糖 Soluble sugar/ (mg·g^-1)	总黄酮 Total flavonoids/ (mg·g^-1)	咖啡因 Caffeine/%	茶多酚 Tea polyphenols/%	维生素C Vitamin C/ (mg·100g^-1)
江口 Jiangkou	19.50± 0.10 c	4.50± 0.20 d	18.60± 0.30 d	3.04± 0.03 a	2.41± 0.01 b	25.00± 0.30 a	ND	8.60± 0.10 b	19.50± 0.20 b
赤水 Chishui	15.20± 0.10 d	5.30± 0.20 c	27.40± 0.20 a	1.72± 0.04 c	1.64± 0.02 d	20.20± 0.30 c	1.40± 0.10	3.70± 0.20 d	15.50± 0.20 d
息烽 Xifeng	33.70± 0.20 a	7.50± 0.20 a	26.80± 0.10 b	3.28± 0.06 a	1.90± 0.03 c	21.90± 0.20 b	ND	14.00± 0.50 a	17.10± 0.50 c
湄潭 Meitan	21.60± 0.30 b	6.30± 0.10 b	21.10± 0.40 c	2.40± 0.30 b	3.25± 0.02 a	18.60± 0.10 d	ND	7.80± 0.50 c	20.50± 0.30 a

县域 County	水浸出物 Water extract/%	灰分 Ash/(g· 100g^-1)	蛋白质 Protein/(g· 100g^-1)	粗脂肪 Crude fat/ (g·100g^-1)	可溶性糖 Soluble sugar/ (mg·g^-1)	总黄酮 Total flavonoids/ (mg·g^-1)	咖啡因 Caffeine/%	茶多酚 Tea polyphenols/%	维生素C Vitamin C/ (mg·100g^-1)
江口 Jiangkou	19.50± 0.10 c	4.50± 0.20 d	18.60± 0.30 d	3.04± 0.03 a	2.41± 0.01 b	25.00± 0.30 a	ND	8.60± 0.10 b	19.50± 0.20 b
赤水 Chishui	15.20± 0.10 d	5.30± 0.20 c	27.40± 0.20 a	1.72± 0.04 c	1.64± 0.02 d	20.20± 0.30 c	1.40± 0.10	3.70± 0.20 d	15.50± 0.20 d
息烽 Xifeng	33.70± 0.20 a	7.50± 0.20 a	26.80± 0.10 b	3.28± 0.06 a	1.90± 0.03 c	21.90± 0.20 b	ND	14.00± 0.50 a	17.10± 0.50 c
湄潭 Meitan	21.60± 0.30 b	6.30± 0.10 b	21.10± 0.40 c	2.40± 0.30 b	3.25± 0.02 a	18.60± 0.10 d	ND	7.80± 0.50 c	20.50± 0.30 a

县域 County	精氨酸 Arg	赖氨酸 Lys	丙氨酸 Ala	苏氨酸 Thr	缬氨酸 Val	丝氨酸 Ser	脯氨酸 Pro	异亮氨酸 Tle	亮氨酸 Leu	蛋氨酸 Met	组氨酸 His	苯丙氨酸 Phe	天门冬氨酸 Asp	胱氨酸 Cys	酪氨酸 Tyr	色氨酸 Trp
江口 Jiangkou	160± 2.0c	43± 2.0 b	180± 1.0 a	49± 2.0 c	29± 6.0 a	24± 3.0 c	33± 2.0	26± 2.0 b	63± 3.0 a	ND	92± 6.0 c	19± 3.0 b	48± 5.0 a	68± 3.0 c	18± 1.0 b	ND
赤水 Chishui	220± 5.0 a	ND	120± 3.0 c	ND	ND	34± 1.0 a	36± 1.0 a	46± 3.0 a	53± 2.0 b	ND	140± 2.0 a	ND	ND	100± 3.0 b	ND	56± 3.0 b
息烽 Xifeng	180± 8.0 b	ND	110± 4.0 d	63± 3.0 b	18± 1.0 b	30± 2.0 b	ND	45± 1.0 a	52± 5.0 b	ND	ND	ND	ND	210± 1.0 a	34± 3.0 a	56± 1.0 b
湄潭 Meitan	ND	64± 2.0 a	150± 8.0 b	110± 2.0 a	ND	ND	ND	ND	ND	16± 3.0a	120± 4.0 b	79± 2.0 a	ND	ND	ND	86± 4.0 a

县域 County	精氨酸 Arg	赖氨酸 Lys	丙氨酸 Ala	苏氨酸 Thr	缬氨酸 Val	丝氨酸 Ser	脯氨酸 Pro	异亮氨酸 Tle	亮氨酸 Leu	蛋氨酸 Met	组氨酸 His	苯丙氨酸 Phe	天门冬氨酸 Asp	胱氨酸 Cys	酪氨酸 Tyr	色氨酸 Trp
江口 Jiangkou	160± 2.0c	43± 2.0 b	180± 1.0 a	49± 2.0 c	29± 6.0 a	24± 3.0 c	33± 2.0	26± 2.0 b	63± 3.0 a	ND	92± 6.0 c	19± 3.0 b	48± 5.0 a	68± 3.0 c	18± 1.0 b	ND
赤水 Chishui	220± 5.0 a	ND	120± 3.0 c	ND	ND	34± 1.0 a	36± 1.0 a	46± 3.0 a	53± 2.0 b	ND	140± 2.0 a	ND	ND	100± 3.0 b	ND	56± 3.0 b
息烽 Xifeng	180± 8.0 b	ND	110± 4.0 d	63± 3.0 b	18± 1.0 b	30± 2.0 b	ND	45± 1.0 a	52± 5.0 b	ND	ND	ND	ND	210± 1.0 a	34± 3.0 a	56± 1.0 b
湄潭 Meitan	ND	64± 2.0 a	150± 8.0 b	110± 2.0 a	ND	ND	ND	ND	ND	16± 3.0a	120± 4.0 b	79± 2.0 a	ND	ND	ND	86± 4.0 a

县域County	钙Ca	铁Fe	硒Se	锌Zn	镁Mg	锰Mn
江口Jiangkou	20.00±0.20 b	555.00±2.00 a	6.88±0.03 c	26.90±0.30 b	4 080.00±5.00 b	135.00±3.00 c
赤水Chishui	30.10±0.20 a	472.00±2.00 b	10.50±0.18 a	13.60±0.10 c	3 190.00±3.00 c	2 850.00±7.00 a
息烽Xifeng	15.80±0.15 c	384.00±2.00 c	8.92±0.02 b	33.90±0.30 a	4 650.00±6.00 a	447.00±2.00 b
湄潭Meitan	6.26±0.03 d	208.00±2.00 d	10.40±0.10 a	7.33±0.01 d	1 340.00±3.00 d	103.00±1.00 d

Comparison of quality of Hawk tea (Litsea coreana var. sinensis) in four counties of Guizhou Province

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县域County	镍Ni	铜Cu	砷As	锗Ge	铅Pb
江口 Jiangkou	19.00±0.28 b	24.40±0.10 b	1.17±0.01 a	0.27±0.04 b	8.08±0.01 a
赤水 Chishui	26.50±0.30 a	31.10±0.50 a	0.31±0.01 d	0.29±0.02 b	1.67±0.01 c
息烽 Xifeng	18.70±0.17 b	15.50±0.20 d	0.72±0 b	0.95±0.04 a	0.98±0 d
湄潭 Meitan	9.73±0.03 c	17.70±0.10 c	0.35±0 c	0.26±0.01 b	2.68±0.03 b

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