0000000000279687
AUTHOR
R Mignogna
EVOLUZIONE DEI CAROTENOIDI NEL CORSO DELLA MATURAZIONE DI UVE TINTILIA
I carotenoidi presenti nelle uve, principalmente luteina e -carotene, sono importanti precursori di aromi caratteristici, appartenenti alla classe dei C13-norisoprenoidi. Tali composti sono di grande interesse per la loro bassa soglia olfattiva e perché contribuiscono in modo significativo alla qualità e tipicità dei vini. Nella presente nota si è valutata l’evoluzione dei carotenoidi nel corso della maturazione di uve Tintilia, vitigno fortemente legato al territorio della regione Molise, in relazione alla forma di allevamento. La forma di allevamento a Guyot, rispetto al cordone speronato, ha favorito un maggior accumulo di sostanze polifenoliche, antocianiche e di carotenoidi nelle uve.…
Production of functional probiotic, prebiotic, and synbiotic ice creams
In this work, 3 types of ice cream were produced: a probiotic ice cream produced by adding potentially probiotic microorganisms such as Lactobacillus casei and Lactobacillus rhamnosus; a prebiotic ice cream produced by adding inulin, a prebiotic substrate; and a synbiotic ice cream produced by adding probiotic microorganisms and inulin in combination. In addition to microbial counts, pH, acidity, and physical and functional properties of the ice creams were evaluated. The experimental ice creams preserved the probiotic bacteria and had counts of viable lactic acid bacteria, after frozen storage that met the minimum required to achieve probiotic effects. Moreover; most of the ice creams show…
Degradation of Carotenoids in Apricot (Prunus armeniaca L.) During Drying Process
"Carotenoids are natural compounds whose nutritional importance comes from the provitamin A activity of some of them and their protection against several serious human disorders. The degradation of carotenoids was investigated during apricot drying by microwave and convective hot-air at 60 and 70 A degrees C. Seven carotenoids were identified: antheraxanthin, lutein, zeaxanthin, beta-cryptoxanthin, 13-cis-beta-carotene, all-trans-beta-carotene and 9-cis-beta-carotene; among these, all-trans-beta-carotene was found to be about 50 % of total carotenoids. First-order kinetic models were found to better describe all-trans-beta-carotene reduction during drying, with a degradation rate constant (…