The Information You Want To Know about Sesame Seeds Is Available Here

English name: Sesamin 

Chinese name: Sesame extract

CAS number: 607-80-7

Molecular formula: C20H18O6 Molecular weight: 354.35

Appearance: White crystalline powder

Solubility: Sesame extract is soluble in organic solvents such as methanol, ethanol, DMSO, etc

Content: ≥ 98% (there are various specifications of content that can be compounded with 10%, 20%, 40%, 60%, 90%, etc.)

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Sesamin is a natural ingredient found in sesame seeds

Sesamin, belonging to lignin compounds, is a natural antioxidant and the main active ingredient in Sesamum indicum DC seeds or seed oils of the sesame family; In addition to sesame in the sesame family, sesamin has also been isolated from various plants, such as North Asarum in the Aristolochiaceae family, Two Faced Needle in the Rutaceae family, Bashan Zanthoxylum, Chinese herbal medicines such as Southern Dodder Seed and Cinnamomum camphora, which have also been found to contain sesamin. Although these plants all contain sesamin, their content is not as high as that of sesame seeds in the sesame family. Sesame seeds contain about 0.5% to 1.0% lignans, with the most important being sesamin, which accounts for about 50% of the total lignan compounds.

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Stability

Sesame extract is relatively stable during the roasting process, and can still maintain an initial content of over 90% after roasting at 160-200 ℃ [7]. Compared to sesame oil made without roasting sesame seeds, the antioxidant capacity of sesame oil extracted from roasted seeds is higher. After roasting sesame seeds at 180 ℃ for 30 minutes, the content of sesamin, sesamin, and r-tocopherol in sesame oil decreased from 391.6 mg/100g, 242.3 mg/100g, and 40.4 mg/100g, respectively, to 352 0, 185.5, and 33.0 mg/100g, while sesamin increased from 0.02 mg/100g to 16.1 mg/100g.

Extraction method

The separation and extraction methods of sesamin are mainly divided into two categories: one is to use organic solvents such as methanol, ether, etc. to directly extract sesamin from sesame oil, and then crystallize and purify it; The second method is to use low-pressure distillation of sesame oil, and then perform molecular distillation, resin adsorption, and other treatments on its distillate. With the gradual deepening of research on sesamin, the requirements for the purity, production methods, and product safety of sesamin are also increasing. Internationally, there is a tendency to adopt the second type of method and perform preliminary physical treatment on sesame oil to avoid contamination by organic solvents

Test method

Currently, the main detection methods for sesamin include: high-performance liquid chromatography (HPLC) [10], thin-layer chromatography (TLC) [11], gas chromatography (GC) [12], and nuclear magnetic resonance (NMR) [13]. Thin layer chromatography and liquid chromatography can not only be used for qualitative detection of sesamin in raw materials, but also for quantitative preparation of high-purity sesamin for research purposes.