Details

Autor(en) / Beteiligte

• Akretche, Hassina
• Pierre, Guillaume
• Moussaoui, Ramdane
• Michaud, Philippe
• Delattre, Cédric

Titel

Valorization of olive mill wastewater for the development of biobased polymer films with antioxidant properties using eco-friendly processes

Ist Teil von

• Green chemistry : an international journal and green chemistry resource : GC, 2019-06, Vol.21 (11), p.365-373

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The objective of this study was to evaluate the potential of olive mill wastewater (OMWW) for the synthesis of a new active food material. OMWW contains a substantial amount of valuable antioxidant phenols which can be recovered for industrial applications as food additives. The aim of the present study was to synthesize phenolic compound-pectin conjugates by adopting two eco-friendly green procedures: a free radical-induced grafting using the H 2 O 2 /ascorbic acid system and a complexation grafting using CaCl 2 . The antioxidant activities of the selected free phenolic compounds (coumaric acid, caffeic acid, tyrosol, OMWW) and of the phenolic compound-pectin biobased films were investigated with the DPPH assay. The content of polyphenol in OMWW was estimated to be 2 g L −1 (in gallic acid equivalent), and the free antioxidant activity of OMWW solutions (from 0.2 to 2 g L −1 of polyphenol (in gallic acid equivalent)) was estimated to be from 60 to 80%. After immobilization processes, the antioxidant activities of each biobased polymer film were efficient and stable for a long contact period. Regarding biobased polymer films using OMWW, the antioxidant activities were estimated to be 61 ± 0.4% and 84 ± 0.8% after 96 h for the CaCl 2 grafting method and the free radical grafting method, respectively. A green chemistry process to produce eco-friendly antioxidant biobased polymer films from olive mill wastewater.