Comparison of phenolic compounds, tocopherols, phytosterols and antioxidant potential in Zhejiang pecan [Carya cathayensis] at different stir-frying steps

Comparison of phenolic compounds, tocopherols, phytosterols and antioxidant potential in Zhejiang pecan [Carya cathayensis] at different stir-frying steps
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不同炒制步骤浙江山核桃中酚类化合物、生育酚、植物甾醇及抗氧化能力的比较

DOI:
10.1016/j.lwt.2014.09.049
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发表时间:
2015-06
影响因子:
6
通讯作者:
Lu, Baiyi
Lu, Baiyi
中科院分区:
农林科学1区
文献类型:
--
作者:
Xiong, Lina;Mao, Shuqin;Hu, Yinzhou;Lu, Baiyi

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研究了不同温度(200 °C ~ 400 °C)和时间(10 min ~ 30 min)对山核桃仁的总酚含量(TPC)、酚酸、生育酚、植物甾醇和抗氧化能力的影响。结果表明,青冈种仁中总酚、酚酸、生育酚和植物甾醇的含量分别为19.4mg没食子酸当量/g干重、3.67mg/g干重、79.5 μg/g干重和1.00mg/g干重。青鱼种仁水溶性和油溶性部分的抗氧化活性分别为78.3mg Trolox当量/g干重(DPPH自由基清除活性)和0.03mg meq/kg(过氧化值)。在低温下短时间内炒导致所研究的化合物和抗氧化能力的明显增加。然而,这些值随着加热时间和温度的升高而降低。因此,在山柑的加工过程中,选择合适的温度和时间进行炒制是有益的。
The effect of stir-fryingCarya cathayensiskernels at varying temperatures (200 °C–400 °C) and time periods (10 min–30 min) on total phenolic contents (TPC), phenolic acids, tocopherols, phytosterols and antioxidant capacity was investigated. The concentrations of TPC, phenolic acids, tocopherols and phytosterols in rawC. cathayensiskernels were 19.4 mg gallic acid equivalent/g dry weight, 3.67 mg/g, 79.5 μg/g and 1.00 mg/g, respectively. The antioxidant from the water and the oil-soluble part ofC. cathayensiskernels were 78.3 mg Trolox equivalent/g dry weight (DPPH radical-scavenging activity) and 0.03 mg meq/kg (Peroxide value), respectively. Stir-frying at a low temperature over a short time period led to an apparent increase of the studied compounds and antioxidant capacity. However, these values decreased with heating time and temperature increased. In conclusion, it is benefit for stir-frying at a suitable temperature and over a suitable time period during the processing ofC. cathayensis.
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