Identification and characterisation of phenolic compounds extracted from Moroccan olive mill wastewater

Food Science and Technology (Campinas)

Inass Leouifoudi²  Abdelmajid Zyad¹  Ali Amechrouq¹  Moulay Ali Oukerrou¹  Hassan Ait Mouse¹  Mohamed Mbarki² 

[1] ,Sultan Moulay Slimane University Faculty of Science and Technologies Beni Mellal,Morocco

关键词: phenolic compounds;    olive mill wastewater;    HPLC-ESI-MS;    antioxidant activity;   

DOI  :  10.1590/fst.2014.0051

来源: SciELO

【 摘 要 】

Olive mill wastewater, hereafter noted as OMWW was tested for its composition in phenolic compounds according to geographical areas of olive tree, i.e. the plain and the mountainous areas of Tadla-Azilal region (central Morocco). Biophenols extraction with ethyl acetate was efficient and the phenolic extract from the mountainous areas had the highest concentration of total phenols' content. Fourier-Transform-Middle Infrared (FT-MIR) spectroscopy of the extracts revealed vibration bands corresponding to acid, alcohol and ketone functions. Additionally, HPLC-ESI-MS analyses showed that phenolic alcohols, phenolic acids, flavonoids, secoiridoids and derivatives and lignans represent the most abundant phenolic compounds. Nüzhenide, naringenin and long chain polymeric substances were also detected. Mountainous areas also presented the most effective DPPH scavenging potential compared to plain areas; IC50 values were 11.7 ± 5.6 µg/ml and 30.7 ± 4.4 µg/ml, respectively. OMWW was confirmed as a rich source of natural phenolic antioxidant agents.

【 授权许可】

CC BY   
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