Search results for "manna"
showing 10 items of 91 documents
Effect of konjac glucomannan addition on aroma release in gels containing potato starch.
2014
International audience; The present study aimed to measure the retention of aroma compounds (ethyl acetate, ethyl hexanoate and carvacrol) in dispersions based on konjac glucomannan and/or potato starch, and to highlight the influence of konjac glucomannan on the mechanisms involved in aroma retention. Publications on the effect of konjac glucomannan on aroma release are scarce. Konjac glocomannan is a polysaccharide used as a food additive for its viscous and emulsifying properties. Retention of aroma compounds in dispersions was calculated from partition coefficients which were measured using the phase ratio variation method. This method, consisting of analyses of the headspace at equilib…
Recensione di Margherita Tabanelli, Architettura sacra in Calabria e Sicilia nell’età della Contea normanna
2020
Recensione della monografia di Margherita Tabanelli sull'architettura religiosa dell'età della contea normanna in Calabria e in Sicilia
The coast of Altavilla Milicia east of Palermo. Story of a forgotten coastal landscape between illegal building, architectural-landscape emergencies …
2019
La costa che va da Bagheria a Cefalù è caratterizzata dalla presenza di numerose costruzioni abusive che, in tantissimi casi sorgono sulla stessa battigia in dispregio a qualsiasi norma urbanistica. Questo fenomeno invasivo, in parte anche prodotto da piani regolatori urbanistici non curanti dei valori paesaggistici fortemente presenti in questa area, ha avuto inizio dagli anni settanta del Novecento, con la ricerca di seconde case per la residenza stagionale soprattutto da parte degli abitanti di Palermo. Guardando tutto il Golfo di Termini Imerese che comprende la costa prima indicata, abbiamo modo di osservare come, immerse e soffocate dall’edilizia contemporanea, emergono resti di archi…
New Method of DNA Isolation from Two Food Additives Suitable for Authentication in Polymerase Chain Reaction Assays
2005
Locust bean gum and guar gum are galactomannans used as additives (E 410 and E 412, respectively) in the food industry as stabilizing agents. Analytical discrimination between the two additives in gums and foods is now feasible by molecular techniques. However, only complex and time-consuming DNA isolation protocols are available to date. We have developed simple improved protocols to obtain enough DNA suitable for PCR amplification from a few milligrams of commercial E 410 and E 412 additives (containing more than 75% polysaccharides). The suspension of additives in water or 10 mM Tris-HCl, pH 8.5, efficiently recovers DNA suitable for authentication in PCR assays. However, the Tris method…
From the forest to the plate – Hemicelluloses, galactoglucomannan, glucuronoxylan, and phenolic-rich extracts from unconventional sources as function…
2021
This study aimed to characterise pressurised hot water (PHW) extracts from nonconventional sources of functional carbohydrates and phenolic compounds in terms of antioxidant capacity, antiviral activity, toxicity, and human erythrocytes’ protection antidiabetic potential. PHW extracts of Norway spruce bark (E1 + E2) and Birch sawdust (E3 + E4) contained mostly galactoglucomannan and glucuronoxylan. In contrast, samples E5 to E9 PHW extracted from Norway spruce, and Scots pine bark are rich sources of phenolic compounds. Overall, phenolic-rich extracts presented the highest inhibition of α-amylase and α-glucosidase and protection against stable non-enveloped enteroviruses. Additionally, all …
Neuronal immunoreactivity for mannose-binding lectin after venous occlusion-induced focal cerebral ischemia in rats
2012
Abstract A recent research reveals that complement activation exacerbates cerebral infarction. However, involvement of the lectin pathway, (the third complement activation pathway) in cerebral ischemia is not well studied. In this study, we investigated the appearance of mannose-binding lectin (MBL) in ischemic brain tissue. Male Wistar rats ( n = 25) were divided into three groups: untreated control, sham, and vein occlusion (VO). Rats in the VO group had two adjacent photochemically occluded cortical veins. Regional cerebral blood flow (rCBF) was measured in the sham and VO groups. Rats were perfusion-fixed at 72 h in the sham group and at 3, 24, and 72 h after inducing ischemia in the V…
Analytical pyrolysis of wood and non-wood materials from integrated biorefinery concepts
2019
Wood and non-wood differ with respect to their anatomical, physical, and chemical properties, even among their species, resulting in different behaviors during thermal conversion. Hence, understanding the degradation of these feedstocks by pyrolysis is attractive to establish biorefinery possibilities for renewable resources. Additionally, biomass pretreatment technology plays an important role in many biorefinery processes. Therefore, an approach that integrates such pretreatment with pyrolysis offers an attractive, novel method for improving the end-product spectrum (e.g., enriched either with aliphatic or aromatic constituents). Furthermore, a rapid analytical method for biomass feedstoc…
Composizione, stile e tendenze dei «Gesta Roberti Wiscardi» di Guglielmo il Pugliese
2009
Il saggio si propone di mettere in evidenza alcune caratteristiche (compositive, ideologico-politiche, retorico-stilistiche) dei «Gesta Roberti Wiscardi» di Guglielmo il Pugliese, l’unico poema epico-storico del sec. XII che tratti della conquista normanna dell’Italia meridionale: le altre opere letterarie nelle quali vengono narrate tali vicende sono tutte, infatti, in prosa (o, tutt’al più, miste di prosa e versi), da Amato da Montecassino a Goffredo Malaterra, da Alessandro di Telese a Falcone di Benevento, da Romualdo da Salerno al cosiddetto Ugo Falcando. I «Gesta Roberti Wiscardi» contano 2833 esametri suddivisi in cinque libri, con un prologo e un epilogo, e si inseriscono in quel va…
Pyrolytic behavior of lignocellulosic-based polysaccharides
2018
The thermochemical behavior of cellulose, glucomannan, and xylan was investigated by pyrolysis–gas chromatographymass spectrometry (Py-GC/MS). In each case, major GC-amenable condensable products were classified into several compound groups, and the formation of these monomer-related fragments from the model substance samples was determined at 500, 600, and 700 C with a residence time of 5 s and 20 s. The results revealed that despite some general formation trends, no compound group was selectively formed at certain temperatures. Of the 11 product groups, the primary ones, including lactone, furan, and cyclopentenone derivatives, accounted for 72–85% (from cellulose), 86–90% (from glucomann…
Palermo. Un museo virtuale - Palermo. A virtual museum
2016
Conoscenza, conservazione e valorizzazione sono tra gli obiettivi principali delle discipline riguardanti il disegno, il rilievo e la restituzione grafica dell’architettura, che non si fermano soltanto alla documentazione dello stato di fatto ma comprendono anche ricostruzioni congetturali del processo diacronico di modificazione del monumento ai fini di una sua più ampia conoscenza; la storia del monumento si inserisce, in tal modo, nella storia della città e dei suoi cambiamenti culturali; queste nuove immagini sono veri e propri importanti elementi di un "virtual museum" del sito e, più in generale, della città sulla quale esso insiste. Da molti anni, ormai, i docenti, gli assegnisti di …