Impact of Agronomic Treatments on the Enzymatic Browning of Eggplants ( L.).

Enzymatic browning could negatively affect the sensory and nutritional properties of eggplants post-harvest. Polyphenols, polyphenol oxidase (PPO), and reactive oxygen species (ROS) are three material conditions involved in enzymatic browning. This paper seeks to evaluate the effect of fertilization techniques and grafting on the activity of PPO and colorimetric parameters in cultivated eggplants.

Biochemical and functional properties of wheat middlings bioprocessed by lactic acid bacteria.

The present study aimed to investigate the bioprocessing of wheat middlings with different lactic acid bacteria (LAB) in order to improve biological activities of this by-product of wheat flour production. The concentration of lactic acid, reducing sugars, and total phenolics, as well as antioxidant, antibrowning, antibacterial and prebiotic activities of fermented samples were analyzed. All LAB strains were capable to growth on wheat middlings, and pH decreased in the medium associated with lactic acid production during cultivation.

Valorisation of Ginger and Turmeric Peels as Source of Natural Antioxidants.

The antioxidant activity of ginger and turmeric powders derived from freeze-dried rhizomes and peels as well as commercial spices has been evaluated by two spectrophotometric assays based on electron transfer such as DPPH and FRAP. The phenolic characterization has been also carried out by detecting total polyphenols through Folin-Ciocalteu method and HPLC analysing 6-gingerol and curcumin. Ginger and turmeric peels showed greater antioxidant activity than commercial powders because of their higher phenolic yields.

Study on the antioxidant and antimicrobial activities of Allium ursinum L. pressurised-liquid extract.

Allium ursinum L. is widely used as a spice as well as a traditional medicine. The aim of this work was to evaluate the antioxidant and antimicrobial activities (AMAs) of A.