Search results for "Alimenti"
showing 10 items of 143 documents
Composizione e attività biologica di “idrolati” di agrumi
Gli idrolati, o acque aromatiche, sono prodotti naturali ricavati dalla distillazione di piante o parti di piante fresche che conservano intatte le loro proprietà e possono essere utilizzati a diverso scopo1. Essi sono comunemente considerati un sottoprodotto degli oli essenziali, ma in realtà, data la diversa composizione e la conseguente maggiore delicatezza, hanno un loro apprezzabile utilizzo, legato comunque al mantenimento delle proprietà delle piante da cui derivano. Nell’industria agrumaria gli idrolati sono il risultato della produzione degli oli essenziali attraverso spremitura a freddo delle bucce degli agrumi e sono considerati un rifiuto da smaltire. Lo studio della composizion…
Influenza della tostatura e della preparazione del caffè sul contenuto di Ocratossina A determinata mediante HPLC-FD
2008
Characterization of glyceridic components of Sicilian extra virgin olive oils using LC/MS and L.D.A.
2009
Edible Insects an Alternative Nutritional Source of Bioactive Compounds: A Review
2023
Edible insects have the potential to become one of the major future foods. In fact, they can be considered cheap, highly nutritious, and healthy food sources. International agencies, such as the Food and Agriculture Organization (FAO), have focused their attention on the consumption of edible insects, in particular, regarding their nutritional value and possible biological, toxicological, and allergenic risks, wishing the development of analytical methods to verify the authenticity, quality, and safety of insect-based products. Edible insects are rich in proteins, fats, fiber, vitamins, and minerals but also seem to contain large amounts of polyphenols able to have a key role in specific bi…
Phthalate esters in coffee brew samples: Analytical method by GC-MS, profile, levels and sources
2012
The present study was aimed to develop a procedure for the analysis of trace concentration of phthalate esters (PEA) in coffee brew stored in plastic cups. Phthalates are esters of phthalic acid, generally have high boiling points, lowvolatility are insoluble in water andpredominantly fat-soluble. Phthalates with higher molecular weights, such as bis(2-ethylhexyl) phthalate (DEHP) are largely used as additives and plasticizers in plastic material (PVC), while those with lower molecular weights are components of solvents, adhesive, wax, ink, pharmaceutical products, insecticide materials and cosmetic. Dimethyl phthalate and diethyl phthalate are present in plastics based on cellulose esters …
Chitosan Film Functionalized with Grape Seed Oil—Preliminary Evaluation of Antimicrobial Activity
2022
Although the fishing and wine industries undoubtedly contribute significantly to the economy, they also generate large waste streams with considerable repercussions on both economic and environmental levels. Scientific literature has shown products can be extracted from these streams which have properties of interest to the cosmetics, pharmaceutical and food industries. Antimicrobial activity is undoubtedly among the most interesting of these properties, and particularly useful in the production of food packaging to increase the shelf life of food products. In this study, film for food packaging was produced for the first time using chitosan extracted from the exoskeletons of red shrimp (Ar…
High Yields of Shrimp Oil Rich in Omega-3 and Natural Astaxanthin from Shrimp Waste
2020
A valued marine oil rich in omega-3 lipids and natural astaxanthin is obtained with remarkably high yield (up to S wt %) extending to pink shrimp waste (head and carapace) using the approach to extract fish oil from fish processing byproducts using D-limonene. Biobased limonene is an excellent solvent for both unsaturated lipids and astaxanthin-based carotenoids preventing oxidative degradation during the extraction cycle including solvent separation at 85 degrees C. Explaining the deep red color of the shrimp oil obtained, computational simulation suggests that D-limonene is also a good solvent for natural astaxanthin abundant in shrimp.
Fruit quality and aroma of tree ripe and detached, sun-exposed ‘Annurca’ apples
2008
Atractyligenin chemistry. Part 4: Synthesis of the 15β-ol epimer of atractyligenin
1996
The oxidation with PCC of atractyligenin 3, the aglicone of the toxic glycoside 1 isolated from Atractylis gummifera L., led to the 15-oxo-derivative 6, together with a small amount of 2,15-dioxoderivative 5, with a selective oxidation of the allylic 15-OH group of the molecule. Further reduction with NaBH4 and KOH hydrolysis gave stereoselectively the 15β-ol epimer of atractiligenin 9.