NGHIÊN CỨU CHIẾT XUẤT TINH DẦU VÀ CÁC CAO CHIẾT CÓ KHẢ NĂNG KHÁNG OXY HOÁ TỪ PHẾ PHẨM CỦA QUÁ TRÌNH SẢN XUẤT TINH DẦU QUẢ HỒI (Illicium verum Hook. F.)

Tóm tắt

Investigating extraction conditions for essential oils and active compounds from Star Anise (Illicium verum
Hook. f.) and evaluating their physicochemical properties and biological activities was investigated to
achieve the suitable extraction results. The raw material was ground using a hammer mill to achieve a
particle size of 8 mm. The essential oil distillation process was carried out for 3 hours with a solid-tosolvent ratio of 1/8, and the heat source temperature was 130°C. GC-MS results showed that the star anise
contained over 90% anethole. The star anise residue was extracted with ethanol under the optimal
conditions of: number of extractions (2 times), extraction time (75 minutes), temperature (50°C), ethanol
concentration (60%), and a solid-to-solvent ratio of 1/6. The total phenolic content of the star anise extract
was 120.69 ± 0.97 mg GAE/g dry extract. The antioxidant activity of the star anise extract and the residue
extract was high (IC50 = 37.82 ± 0.396 µg/mL and 162.21 ± 0.27 µg/mL, respectively). The essential oil of
star anise exhibited weaker DPPH radical scavenging activity (IC50 = 4816.17 ± 0.31 µg/mL). Overall, star
anise contains many compounds with high biological activity, and its residue can be utilized for producing
natural-derived products.