Simultaneous stone-milling and extraction enables efficient one-step extraction of hard plant materials

• Published in: Innovative food science & emerging technologies Vol. 80; p. 103096
• Main Authors: Bui, Thi Bao Chau, Kokawa, Mito, Tran, Thu Tra, Nosaki, Shohei, Miura, Kenji, Kitamura, Yutaka
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2022
• Subjects: Biochemical assay; Extraction; Plant materials; Semi-qualitative assay; Spice; TPC; G; HRV 3C; UB; UC; ReA; ScA; Plant materials; NADH; W; Extraction; Hb; V0; Al-F; RFU; Hi; Semi-qualitative assay; Spice; EM; SME; Ma; RALDH3; Biochemical assay; HE; β-NAD; Ni-NTA
• ISSN: 1466-8564; 1878-5522
• DOI: 10.1016/j.ifset.2022.103096

Extraction of plant materials is an essential practice in various fields using natural compounds. Nevertheless, it is challenging to perform complicated extraction efficiently and consistently on materials with hard-to-crush structures. This work presents a new method called simultaneous stone-milling and extraction (SME) to achieve one-step extraction of hard materials. SME under its optimal conditions was confirmed to produce high quality extracts from whole spice seeds (anise seeds, dill seeds, fennel seeds) and coarse-cut star anise. Compared to other extraction methods like maceration, heat-assisted extraction and ultrasound-assisted extraction, SME extracts contained comparable or higher concentrations of general (polyphenols, flavonoids, antioxidants) and specific (enzyme inhibitors) bioactive groups. Hence, SME with its one-step operation is expected to simplify the task of plant extraction and contribute to the advances in studies using plant-derived phytochemicals. •The simultaneous stone-milling and extraction (SME) method was established.•SME could efficiently extract hard spice seeds and fruits in virtually one step.•SME was comparable to exhaust maceration and ultrasound-assisted extraction.•SME could extract both abundant and trace components from star anise.