Aiming to contribute to the industrial production,storage and quality control of cold-pressed fresh green Huajiao oil,the change of pigment in cold-pressed fresh green Huajiao oil was analyzed by ultra-high performance liquid chromatography-diode array detector-high resolution mass spectrometry(UPLC-DAD-HRMS),and the effects of light,oxygen,temperature on the pigment content and color(L*,a*,b*)of fresh green Huajiao oil in storage were determined.The results showed that 32 chlorophylls and 10 carotenoids were identified from the cold-pressed fresh green Huajiao oil.The main chlorophylls were chlorophyll a,Cl32-hydroxy chlorophyll a,chlorophyll b and pheophytin a;the main carotenoids were lutein and β-carotene.The total chlorophyll content was 9.44 mg/kg,and the total carotenoid content was 4.95 mg/kg.During storage,the main factor affecting the degradation of pigment in fresh green Huajiao oil was light,followed by temperature,and oxygen had little effect.In addition,the color index a*can be used as an index for pigment content and color control.
green Huajiao/ultra-high performance liquid chromatography-diode array detector-high resolution mass spectrometry(UPLC-DAD-HRMS)/pigment/chlorophyll/carotenoid/chromaticity value
维普
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