Ultrasound-assisted extraction (UAE) of antioxidant phenolics from Corchorus olitorius leaves: a response surface optimization

Chemical and Biological Technologies in Agriculture

Table 6 Compounds identified in C. olitorius leaves extract using LC–MS and HPLC

Peak	Retention time	Name	Molecular weight	[M + H]⁺(m/z)	[M-H]⁻ (m/z)	UV
1	20 min/19.3 min	Chlorogenic acid	354	355	353, 191	326
2	35.5/33.9	Isoquercitrin	464	465, 303	463	254, 355
3	36.2/34.4	Hyperoside	464	465, 303	463	254, 355
4	37.7/35.9	Adhyperforin	550	551	549	276
5	39.3/37.3	1,3-Di-O-caffeoylquinic acid	516	517, 163	515, 353, 161	330
6	41.2/39.1	3,4-Di-O-caffeoylquinic acid	516	517, 163	515, 353, 161	330