Ultrasound‐assisted extraction of bioactive compounds from giloy (Tinospora cordifolia) stem: Quantitative process optimization and bioactives analysis

Abstract

AbstractGiloy (Tinospora cordifolia), a medicinal herb, contains several bioactives having immunomodulatory properties and various health benefits. In this study, giloy stem extract was derived using ultrasound process followed by screening of secondary metabolites and bioactives. Box–Behnken design coupled with RSM was employed for the optimization of yield, total phenolic content and antioxidant activity of GSE with respect to solvent‐to‐solid (SS) ratio, sonication time (ST), and ultrasound amplitude (UA). The UA, ST and their interaction effects had significantly influenced the green extract yield and quality. The optimum extractions conditions were found to be 30% (UA), 10:1 (SS ratio), and 30 min (ST). The optimum responses were obtained as follows: extract yield: 9.614 ± 0.015%, TPC: 100.04 ± 0.133 (mg GAE/100 g extract), and DPPH % inhibition: 78.8523 ± 0.399%. Screening of optimized extract through HR‐LCMS‐QTOF reported the presence of major polyphenols such as malic acid, catechin, and quercitrin with a match factor of 99.23%, 98.65%, and 90.58%, respectively.Practical applicationsGiloy (T. cordifolia) is a potential source of bioactive compounds with significant medicinal properties and chemical stability. Recent trends suggest paradigm shift toward research and development of active food from the herbal plant for special purposes such as supplements, functional food, nutraceuticals, or medicine. Thus, non‐thermal extraction and characterization of extract for screening along with higher retention of bioactive from herbal plants such as giloy and its utilization becomes a crucial part of any industry. In this regard, the present study on ultrasound extraction is the way ahead due to high bioactive retention and the cost implications of the process.