Quantitative Analysis of Phenolic Acids and Flavonoids in Cuscuta chinensis Lam. by Synchronous Ultrasonic-Assisted Extraction with Response Surface Methodology

Table 2

Contents of phenolic acids in samples from different origins (ng·g⁻¹).

Collecting locations	Chlorogenic acid	Cryptochlorogenic acid	Neochlorogenic acid	Isochlorogenic acid A	Isochlorogenic acid B	Isochlorogenic acid C	Caffeic acid	Total phenolic acids
Qingdao	12000.0	1043.0	102.3	536.5	247.0	341.3	51.6	14321.7
Inner Mongolia	20700.0	2570.0	1021.3	3703.3	518.7	1416.7	88.1	30018.1
Ningxia	7060.0	652.3	97.4	260.7	—	417.7	82.0	8570.1
Beijing	567.0	361.0	138.7	—	—	—	—	1066.7
Suizhou	6966.7	736.7	91.6	119.0	—	358.7	134.7	8407.4
Zhangshu	343.3	175.0	65.0	63.6	—	285.7	—	932.6
Guizhou	20466.7	788.7	467.3	32633.3	1643.3	6716.7	213.3	62929.3
Yunnan	196.7	202.3	88.1	142.1	—	—	—	629.2
Henan	11900.0	501.7	141	187.0	375.0	689.0	119.0	13912.7
Anhui1	8710.0	423.5	101.1	675.0	288.7	398.7	127.5	10724.5
Tianjin	11633.3	—	—	149.5	266.0	410.5	—	12459.3
Xinjiang	9625.0	1640.0	178.5	212.0	321.3	781.7	141.0	12899.5
Jiangsu	603.3	—	143.0	—	—	—	—	746.3
Bozhou	21366.7	2060.0	211.0	857.0	411.0	757.0	125.7	25788.4
Anhui2	15233.3	1900	310.7	568.7	334.3	968.3	118.0	19433.3
Shanxi	5090.0	705.7	145.3	75.3	—	—	144.3	6160.6
Tangshan	143.5	—	522.5	—	—	—	—	666.0
Liaoning	5746.7	—	215.7	102.5	—	—	30.1	6095.0
Zhejiang	12500.0	1143.3	110.0	165.0	—	385.0	86.4	14389.7
Anhui3	13500.0	1466.7	208.0	256.7	—	330.3	105.7	15867.4
Jiangsu	20466.7	2010.0	312.7	1380.0	363.0	720.0	141.3	25393.7
Henan	2610.0	—	229.3	—	—	—	11.6	2850.9
Hebei	50500.0	5895.0	851.0	15150	1795.0	7005.0	2190.0	83386.0
Chifeng	23733.3	2730.0	1293.3	3953.3	585.3	1366.7	167.7	33829.6
Chongqing	30200.0	5100.0	1780.0	44633.3	3310.0	13300.0	3940.0	102263.3
Lingchuan	4995.0	633.3	120.3	453.0	—	487.5	70.1	6759.2
Shanxi	16033.3	1305.0	110.0	391.0	—	417.7	140.0	18397.0
Shanghai	4086.7	—	101.6	—	—	—	19.1	4207.4
Xuzhou	32266.7	3180.0	896.3	5056.7	618.3	1423.3	157.0	43598.3
Guangdong	15150.0	1550.0	165.9	—	—	—	100.2	16966.1
Qiyang	16333.3	605.3	256.3	2816.7	477.7	1090.0	295.0	21874.3