Chemical Composition Analysis, Sensory, and Feasibility Study of Tree Peony Seed

• Autores: Yingyi Mao, Jigang Han, Fang Tian, Xue Tang, Yonghong Hu, Yan Guan
• Localización: Journal of food science, ISSN 0022-1147, Vol. 82, Nº 2, 2017, págs. 553-561
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Eight wild species in Sect. MoutanDC (tree peony) of the genus Paeoniagrown in natural habitats and 1 cultivated specie were investigated to analyze their fatty acid and bioactive phenolic compound profiles. For fatty acid composition, P. ludlowiicontained the lowest α‐linolenic acid (27.68%) and P. jishanensiscontained the highest (51.96 %) content of the 9 species. For phenolic compounds, P. qiuicontained the highest resveratrol (2.12 mg/g), P. delavayicontained the highest β‐gentiobiosylpaeoniflorin (26.23 mg/g), and P. ostiicontained the highest paeoniflorin (23.66 mg/g). P. ostiiwas selected to perform a feasibility study because of its relatively high level of α‐linolenic acid 46.53%, low in ω‐6 to ω‐3 ratio of 1:2, and high level of the preferred bioactive phenolic compounds l including paeoniflorin and resveratrol. Physical pressing and refining process were conducted to obtain P. ostiiseed oil. It exhibited bland sensory attributes described as slight grassy, very slight nutty, no painty or fishy aroma and slight grassy, slight nutty flavor with a very slight throat catch. Tocol results reported high level in tree peony seed oil 223.5 ± 13.65 mg/100 g with γ‐tocopherol 70.1 ± 2.14 mg/100 g, and γ‐tocotrienol 149.6 ± 15.83 mg/g. Because of the high total tocol, γ‐tocopherol and γ‐tocotrienol levels, and tree peony seed oil exhibited better oxidation stability than flaxseed oil even with similar α‐linolenic acid levels. In addition, high levels of γ‐tocopherol and γ‐tocotrienol can introduce therapeutic effects such as antiinflammation and antioxidation. Therefore, this study showed that tree peony seed oil has a great potential to be used in edible oil, nutraceutical supplement, and other health care products. This study provided comprehensive information on tree peony including fatty acid profile and bioactive compounds and discussed feasibility of using tree peony seed oil in commercialized product in terms of sensory, oxidative stability, and nutraceutical value. The knowledge from this study can be used as road map to source tree peony seed oil based on product requirements.