Following the boom in durum wheat breeding, ancient wheat disappeared from the human diet and old durum wheat varieties were replaced by what is believed to be their better versions: higher yielding modern varieties grown in high-input systems. Breeders have worked intensely ever since to improve the quality of durum wheat traits -mainly gluten subunit alleles -to obtain superior technological quality in the main durum wheat end products (first pasta and then bread) but conflicts about predicting their quality still exist. This is because quality is neither governed by one trait alone nor conditioned by a single controllable factor. This review discusses the evolution of wheat varieties from ancient to old, and then modern durum wheat in terms of agronomy, genetics, technological, and end-product qualities. Environmental effects will not be discussed. Moving from ancient to modern durum wheat varieties, grain yield increased, grain protein concentration decreased, and gluten strength and dough toughness improved, ameliorating the quality of pasta but decreasing the durum wheat versatility.
To evaluate the effects of feeding a Hermetia illucens (HI) larvae meal on the different intestinal traits of hens, and to determine the toxic elements’ concentration in the insect meal and diets, 162 hens were randomly allotted to three groups. The control received a corn-soybean meal-based diet (SBM); the HI25 and HI50 groups received two diets in which the 25% and 50% of the dietary protein were replaced by the HI protein, respectively. The duodenal and jejunal villi height and villi/crypt were higher (p < 0.01) in the SBM than in the HI groups. The ileal villi height was higher (p < 0.05) in the SBM and HI25 groups than the HI50. The HI50 group exhibited a lower duodenal maltase activity. The intestinal alkaline phosphatase (IAP) activity linearly decreased in the duodenum and jejunum as the dietary insect meal inclusion increased. The HI50 group had a higher acetate and butyrate level than the SBM. The levels of cadmium (Cd), lead (Pb), mercury (Hg), and arsenic (As) in the diets and insect meal were lower than the maximum values established by the EU Commission. The 25% soybean protein replacement with Hermetia illucens larvae meal in the diet of laying hens was more suitable and closer to the optimal level than 50%.
Of the geographical parameters in a winegrowing site, altitude is an important determinant of wine composition and quality. Grape polyphenols and volatiles comprise a large and varied group of compounds that contribute considerably to the sensory and health-promoting properties of wine. This review surveys the impacts of altitude and its related climatic characteristics on the phenolic and aroma compounds of grapes and wine through the examination of existing literature. Furthermore, this review highlights the challenge of distinguishing the effects of parameters, such as air temperature, variety, vine water status, soil and UV radiation, from the altitude effect. Overall, high-altitude growing sites can favour an increase - albeit at different intensities - in content of many chemical compounds found in grapes and wine, such as total polyphenols, total monomeric anthocyanins, catechins, quercetin derivatives and cyanidin-derived anthocyanins, trihydroxylated flavonols, carotenoids, isoamyl acetate and ethyl hexanoate. However, the altitude factor seems to be cultivar-dependent; in fact, it can exert a positive effect on the concentrations of acylated anthocyanins and of total aroma compounds in some cultivars (e.g., Ekşikara and Glera) and a negative effect on the same components in other cultivars (e.g., Merlot and Cabernet-Sauvignon). Its influence on the polyphenol content can also differ between different parts of the same cultivar; for instance, an increase in skin tannins and a decrease in seed tannins have been found to be concomitant with an increase in altitude in Syrah grapes. Moreover, at higher altitude, the effect of an increase in UV-B radiation can lead to an enhancement in colour intensity due to an increase in the synthesis of anthocyanins, flavonols and tannins. Due to their cool climate, high-elevated winegrowing regions represent favourite cultivation sites under current and future global warming.
Characterization of goat milk from Lebanese Baladi breed and his suitability for setting up a ripened cheese using a selected starter culture.Small Ruminant Research http://dx.(N.P., Mangia) 2 Highlights The first manufacturing of ripened cheese from Baladi goat milk was proposed. Physicochemical and microbiological parameters were evaluated. Thermophilic cocci were dominant during all cheese ripening. Higher content of free fatty acids was observed. ABSTRACTIn this work the hygiene and quality parameters of goat milk from Baladi breeds were assess in order to evaluate his suitability for setting up a ripened cheese. Experimental cheese trials were performed on local Lebanese dairy farm using a selected culture starter.Evolution of physicochemical and microbiological features of experimental cheese during ripening were evaluated. Raw milk showed a good microbiological quality meeting the hygiene criteria given by European law on the hygiene of foodstuffs. Mesophilic lactobacilli were found to predominate during cheese fermentation while thermophilic cocci gradually grown and were preponderant during all ripening stage. Non-protein nitrogen and water soluble nitrogen fractions increased gradually over the ripening highlighting good casein primary proteolysis. The Free Fatty Acids (FFA) content increased through the ripening period reaching 7340 mg/100g. Palmitic and oleic acids were the most representative long-chain FFAs at 210 days whereas capric acid was found as a major short-chain FFA. Cheese ripened 90 days, revealed high score for the flavor and taste attributes and good globally acceptance.3
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