Facultatea de Biologie și Geoştiinţe / Faculty of Biology and Geosciences
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Item ACTIVITATEA ANTIOXIDANTĂ A PREPARATULUI ETANOLIC ÎN BAZA BIOMASEI DE PORPHYRIDIUM CRUENTUM(CEP USM, 2014) Sadovnic, Daniela; Cepoi, Liliana; Rudi, Ludmila; Valuţa, Ana; Chiriac, Tatiana; Codreanu, Svetlana; Miscu, Vera; Cojocari, AngelaThere wasstudied the impact ofantioxidant complex from microalga Porphyridium cruentum biomass on the antioxidant activityof vegetable oilsand their oxidation process. The antioxidant complex was obtained by extracting in 96% ethylalcohol. Antioxidant assay using the radical1,1-diphenyl-2-picryl-hydrazil (DPPH) revealed an increase of the antioxidant activity of oils supplemented with microalgal antioxidant complex. There was determineda decrease (up to 40% for olive oil) in fatty acid oxidation for vegetable oils with microalgal antioxidant extract.Item NOI PREMIXURI FURAJERE ÎN BAZA BIOMASEI DE SPIRULINĂ CU SELEN(CEP USM, 2014) Rudic, Valeriu; Djur, Svetlana; Cepoi, Liliana; Chiriac, Tatiana; Rudi, Ludmila; Codreanu, Svetlana; Ghelbet, VioricaThere have been proposed the recipesfor preparing two feed premixes with organic selenium according to the sourceofinorganicseleniumused: “Spirulina with organic selenium 1 and 2” and “protein feed premix with organic selenium 1 and2”. The proposedpremixescomprise amulticomponent synergisticcombination in case of the first technological recipe and Spirulina extract containing freea mino acids, oligopeptides and selenium-containing proteinsin case of the second recipe exhibiting significant anti-oxidantactivity andimmunomodulatory effect.Item STATUTUL ANTIOXIDANT ÎN CORELARE CU COMPONENŢA BIOCHIMICĂ A BIOMASEI UNOR MICROALGE ÎN CONDIŢII DE TEHNOLOGII INTENSIVE(CEP USM, 2014) Cepoi, LilianaThe coordination compounds of Fe (III) with Schiff bases cause the Porphyridium cruentum biomass reduction and Haematococcus pluvialis biomass increasing in case of application of the mentioned compounds in an amount of 20 mg / l. Between antiradical activity of extracts from biomass and the amount of malonic dialdehyde was detected a moderate inverse correlation to Porphyridium cruentum, and a close correlation to Haematococcus pluvialis. The amount of carotenoids in microalgae biomass correlate with antiradical activity of ethanol extracts, being the major components with antiradical effect both in porfiridium and hematococcus biomass.Item COPPER COMPOUNDS AS STRESS FACTORS AND REGULATORS IN PHYCOBIOTECHNOLOGY(CEP USM, 2022-09-29) Cepoi, LilianaItem EUROPIUM BIOACCUMULATION BY ARTROSPIRA PLATENSIS AND ITS EFFECT ON BIOMASS(CEP USM, 2022-09-29) Iușin, Nichita; Zinicovscaia, Inga; Cepoi, Liliana; Chiriac, Tatiana; Rudi, Ludmila