Premium
Major Fatty Acid Compositions and Antioxidant Activity of Cultivated Paeonia ostii under Different Nitrogen Fertilizer Application
Author(s) -
Liu Wei,
Yin DongXue,
Zhang Tong,
Hou XiaoGai,
Qiao Qi,
Song Peng
Publication year - 2020
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.202000617
Subject(s) - chemistry , trolox , antioxidant , dpph , palmitic acid , linoleic acid , food science , oleic acid , acid value , yield (engineering) , fatty acid , linolenic acid , biochemistry , materials science , metallurgy
Paeonia ostii is now being extensively planted for oil extraction in China, which is recognized as a single oil‐use tree peony cultivar and commonly called ‘Fengdan’. This study investigated the effects of nitrogen fertilizer on oil yield, fatty acid compositions and antioxidant activity of P. ostii . Oil yield (33.46 %), oleic acid (25.12 %), linoleic acid (29.21 %) and α‐linolenic acid (43.12 %) reached the maximum at N450 treatment, with significant differences compared with other treatments ( P< 0.05). Furthermore, strong antioxidant activity with low DPPH IC50 value (19.43±1.91 μg mL −1 ) and large ABTS value (1216.53±30.21 μmol Trolox g −1 ) and FRAP value (473.57±9.11 μmol Trolox g −1 ) was also observed at N450. Palmitic acid (5.57 %) and stearic acid (2.02 %) reached a maximum at N375, but not significant with N450 ( P< 0.05). Nitrogen fertilizer could promote oil yield, fatty acid accumulation and antioxidant activity, and N450 (450 kg ha −1 ) is recommended as the optimum application for P. ostii .