Search results for "Goji"
showing 7 items of 7 documents
The effect of abrasive pretreatment on the drying kinetics and phenolic compounds in goji berries ( Lycium barbarum L.)
2020
The paper investigated the effect of a physical surface abrasion of goji berries on drying kinetics and the evolution of phenolic compounds at 323, 333, and 343 K. A diffusion model was developed to describe the drying process. The effective diffusion coefficient estimated by the model ranged from 7.5 × 10–9 to 4.2 × 10–8 m2/s for cylinder and 2.0 × 10–9 to 1.15 × 10–8 m2/s for sphere for untreated samples (UTR). Higher values were found for treated samples (TR) (from 2.50 × 10–8 to 1.20 × 10–7 m2/s for cylinder and 8.0 × 10–9 to 2.70 × 10–8 m2/s for sphere). For the UTR samples, the values of activation energy were found to be 79.5 and 80.8 kJ/mol, respectively, in the cylinder and sphere …
Effect of pretreatments and drying processo on health-promoting components of goji berries
2020
Drying is one of the most common preservation methods used to extend the shelf life of fruits and vegetables by reducing water content so as to prevent the growth and reproduction of microorganisms and to inactivate many of the moisture-mediated alterative reactions. Goji berries are mainly consumed dried. Several methods can be used to dry goji berries, such as sun drying, hot air drying, vacuum drying, and freeze drying. In this chapter the most used pre-treatment and drying processes found in literature on goji berries are described, together with their effect on their health promoting components, such as carotenoids, tocols, vitamin C, flavonoids and phenols. Moreover the effect of diff…
Chemoprotective effect of carotenoids from Lycium barbarum L. on SH-SY5Y neuroblastoma cells treated with beauvericin
2020
Goji berry has recently been introduced in Mediterranean diet and its consumption is increasing. This study aims to determine cytoprotection of lutein (LUT), zeaxanthin (ZEAX) and goji berry extract (GBE) rich in carotenoids against Beauvericin (BEA)-induced cytotoxicity on SH-SY5Y neuroblastoma cells. Both carotenoids and GBE showed cytoprotective effects. Cytoprotection was evaluated by simultaneous combination of the two xanthophylls LUT and ZEAX with BEA, as well as using pre-treatment assays. The highest protective effect occurred in 16%, 24% and 12% respectively for LUT, ZEAX and LUT + ZEAX incubating simultaneously with BEA, while by pre-treatment assay LUT showed a cytoprotection ef…
Cytoprotective effects of carotenoids-rich extract from Lycium barbarum L. on the beauvericin-induced cytotoxicity on Caco-2 cells.
2019
Abstract In this work, the cytotoxicity of Beauvericin (BEA), lutein (LUT), zeaxanthin (ZEAX) and goji berries extract (GBE) rich in carotenoids, was investigated, as well as cytoprotective effects of these carotenoids against BEA induced-cytotoxicity on Caco-2 cells. Cytotoxicity was carried out using MTT and protein content (PC) assays during 24 and 48 h of exposure. Only BEA showed cytotoxic effect obtaining a reduction in cell proliferation range from 6.5 to 92.8%. Simultaneous combination of LUT and ZEAX with BEA slightly increased cell proliferation compared to BEA tested alone. LUT, ZEAX and GBE showed cytoprotective effects against cytotoxicity induced by BEA on Caco-2 cells. Pre-tr…
Nutritional evaluation of fresh and dried goji berries cultivated in Italy
2017
The nutritional profile of fresh and dried goji berries cultivated in Italy was investigated. The obtained data confirm goji berries as a source of nutritional and healthy components, such as vitamin E, minerals and fibre. Taking into account the Recommended Daily Allowance (RDA) for minerals and vitamins established by the Commission of the European Communities, Goji berries provide significant amounts of dietary fibre and zeaxanthin and can be declared on the label as a potential source of vitamins E and C. Moreover, dried goji berries can be declared as a source of K, P, Cu, Fe Mn, Zn.
Ramas muižas vēsture un arhitektūra, 1884.-1991.
2016
Līdz šim tikai atsevišķos darbos apskatīta Ramas muižas vēsture, turklāt samērā īsi un virspusēji. Tāpēc šajā gadījumā tas uzliek augstāku atbildību pret korektu un iespējami padziļinātāku pētāmās problēmas atspoguļojumu. Darbs balstās uz Ramas muižas saimnieciskās un sociālās vēstures, t.sk. īpašnieku maiņa, pirkšanas/pārdošanas procesi, muižas un tās zemnieku sētu saimnieciskais stāvoklis, tirdzniecība, sadzīve, kultūras pasākumi, kā arī apbūves un arhitektūras vēstures atspoguļojumu – muižas centra plānojums, arhitektūra, apbūves pārmaiņas, kustamās iekārtas. Darba trešajā nodaļā īpaša uzmanība tiek vērsta muižas kungu namu vēsturei, kā rezultātā konstatēta iespējamā, pirms 1720. gada ce…
Effect of a physical pre-treatment and drying on carotenoids of goji berries ( Lycium barbarum L.)
2018
In order to evaluate the influence of an abrasive pre-treatment and drying at 50 °C, 60 °C, 70 °C of goji fruits (Lycium barbarum L.), changes in colour and carotenoids were studied. An extraction method was modified and adapted to assay the main carotenoid esters and saponified carotenoids of goji berries, before and after treatments. Goji berries were confirmed as a high source of zeaxanthin, with zeaxanthin-dipalmitate at about 2 g/kg dry weight. The reliability of the analytical method was confirmed by the high quantitative recoveries, about 100%, a higher repeatability than reference methods and a good reproducibility (lower than 5%). After drying, significant but small carotenoid loss…