Background: Cucurbita maxima known as pumpkin belongs to the family Cucurbitaceae, widely used in traditional medicine. Methods: The present work evaluates antioxidant activity of different parts (leaves and fruit) maxima. Antioxidant was assessed through DPPH test β-carotene bleaching test. Result: results showed that ethanolic extract fruit leaves are rich polyphenols, flavonoids tannin with ...

Phenolic acids existed in many agricultural products especially vegetables and considered as important natural antioxidants. Eleven phenolic commonly were chosen to assess the antioxidant activities using DPPH·, ·ABTS+, ·O2-, ·OH scavenging assays, well ferric reducing power ?-carotene bleaching assays. The results showed that caffeic protocatechuic acid with simple dihydroxylation structures h...

Posidonia oceanica waste biomass has been valorized to develop bioactive multifunctional cellulosic aerogels (HCAG) by simpler and greener protocols. Hydrophobization of was achieved through PLA coating, while bioactivity imparted the incorporation hydrophilic (E2) hydrophobic extracts (E3) produced from same biomass. The led denser aerogels, with less porous structures. These showed outstandin...

the in vitro antioxidant and antimicrobial activities of the essential oil and methanolic extract of achillea sieheana staf. (asteraceae) were investigated in this study. the chemical composition of the essential oil isolated by hydro-distillation from the aerial parts of a. sieheana was analyzed by gc–ms. camphor (43.36%), artemisia ketone (25.95%), 1.8-cineole (6.29%) and camphene (4.77%) wer...

A high acidity extent, as a result of the activation process bleaching earth, is major drawback in production bleached-palm oil. The earth generates problems for equipment well product, which are economically disadvantageous. Addressing this pivotal issue manufacture, more environmentally friendly and efficient using thermal evaluated. Two types bentonite-bleaching collected from two different ...

Corals at the world's southernmost coral reef of Lord Howe Island (LHI) experience large temperature and light fluctuations and need to deal with periods of cold temperature (<18°C), but few studies have investigated how corals are able to cope with these conditions. Our study characterized the response of key photophysiological parameters, as well as photoacclimatory and photoprotective pigmen...

HPLC analysis of pigments of the symbiotic algae of the coral Goniastl-ea aspera (Verrill) showed the presence of the chlorophylls a and c2 (chl a and c,) and the carotenoids pendlnin, diadinoxanthin, diatoxanthin and p-carotene. Increased production of diatoxanthin was seen In algae extracted from the western surfaces of corals, exposed to high levels of solar radiation, during a solar bleachi...

the present work was designed to study the antioxidant activity and to identify the main active components of the essential oil of ajowan (trachyspermum copticum) fruit. gc and gc-ms analyses of the essential oil showed the presence of eight compounds. the main constituents of the oil were thymol (43.7%), p-cymene (26.8%), and γ-terpinene (24.9%). the antioxidant and free radical scavenging act...

This work was conducted to study the chemical composition, antioxidant, antibacterial, and antifungal activities of essential oil hydrolat from Withania frutescens. The extracted by hydrodistillation. characterization performed using gas chromatography-mass spectrometry (GC/MS). antioxidant activity studied four different assays (DPPH, TAC, FRAP, β-carotene bleaching). antibacterial test carrie...