Showing papers in "Food Chemistry in 2011"

TL;DR: In this paper, analytical methods and fractionation techniques of dietary fibres are evaluated for improving physical and structural properties of hydration, oil holding capacity, viscosity, texture, sensory characteristics, and shelf-life.

TL;DR: Information is provided on the most recent developments in the chemical investigation of polyphenols emphasising the extraction, separation and analysis of these compounds by chromatographic and spectral techniques.

TL;DR: In this article, a summary of the research work performed so far using high accuracy quantum chemical methods on polyphenolic antioxidant compounds is presented, which represents a further important contribution to elucidation of the beneficial effects on health of these substances.

TL;DR: A survey of in vitro digestion models found that the most predominant food samples tested were plants, meats, fish, dairy, and emulsion-based foods, and the most frequently used biological molecules included in the digestion models were digestive enzymes, bile salts, and mucin.

TL;DR: Pomegranate extracts and juices were characterised by HPLC-DAD-ESI/MS(n) using collision-induced dissociation experiments in this article, where the ellagitannins were found to be the predominant phenolics in all samples investigated, among them punicalagin ranging from 11 to 20g per kilogram dry matter of mesocarp and peel as well as 4-565mg/L in the juices.

TL;DR: Seven fruits, Chinese date, pomegranate, guava, sweetsop, persimmon, Chinese wampee and plum, possessed the highest antioxidant capacities and total phenolic contents among tested fruits, and could be important dietary sources of natural antioxidants for prevention of diseases caused by oxidative stress.

TL;DR: The QuEChERS methodology as mentioned in this paper is a streamlined and effective extraction and cleanup approach for the analysis of diverse analyte residues in food matrices, including pesticides, but also acrylamide, pharmaceuticals and veterinary drugs.

TL;DR: It is suggested that some polyphenols are bound to macromolecular compounds that are non-dialysable, that the presented method allowed the study of free solublepolyphenols available for further uptake, and that both chemical extraction and concentrations in final digesta would overestimate polyphenol availability.

TL;DR: A comprehensive look at what is known to date about melanoidin structure, the formation mechanism for these compounds, and the biological properties related to the beneficial health effects of melanoidins is provided.

TL;DR: In this article, the authors evaluated the antioxidant activity of carotenes and xanthophylls measured by various methods, compared to α-tocopherol, BHA and BHT.

TL;DR: In this paper, nine red and three black rice varieties from Thailand, China and Sri Lanka were analyzed to determine their proximate composition and their physicochemical and antioxidant properties, and four groups of rice varieties with different amylose contents were identified.

TL;DR: The β-LG conformation was altered in the presence of polyphenols with an increase in β-sheet and α-helix suggesting protein structural stabilisation, which can be used to explain the mechanism by which the antioxidant activity of tea compounds is affected by the addition of milk.

TL;DR: In this article, the authors evaluated the phenolic and flavonoid contents of eight types of edible mushrooms (Agaricus bisporus, Boletus edulis, Calocybe gambosa, Cantharellus cibarius, Craterellus cornucopioides, Hygrophorus marzuolus, Lactarius deliciosus and Pleurotus ostreatus ) by means of high performance liquid chromatography.

TL;DR: In this paper, the effect of chitosan on physicochemical characteristics of Eksotika II papaya fruit stored at 12 ± 1 °C and 85-90% relative humidity, was investigated.

TL;DR: Partially purified polysaccharides were obtained from four medicinal mushroom species, Agaricus bisporus, A. brasiliensis, Phellinus linteus and Ganoderma lucidum by hot water extraction, followed by ethanol precipitation as mentioned in this paper.

TL;DR: This review synthesizes the available information on fish and highlights the knowledge gaps and it is hoped that this review will provide a momentum to the research on the roles of NSPs in fish nutrition and physiology and on the efficient use of N SP-degrading enzymes.

TL;DR: In this paper, the coacervation between soybean protein isolate (SPI) and gum Arabic (GA) for sweet orange oil microencapsulation as functions of pH, ionic strength, SPI/GA ratio, core material load and micromolecules was investigated.

TL;DR: In this article, the polyphenol binding mode, the binding constant and the effects of polyphenolic complexation on casein stability and conformation were determined using FTIR, UV-visible, CD and fluorescence spectroscopic methods as well as molecular modelling.

TL;DR: Bayberry juice was spray dried with maltodextrin as a carrier and then stored under different temperature and water activities, suggesting spray drying was a satisfactory technique for drying heat sensitive polyphenols.

TL;DR: In this paper, Lyophilised soluble coffees extracted by various methods from light, medium and dark-roasted arabica and robusta beans were evaluated for antioxidant activity (AA) using ABTS, Folin, DPPH and FRAP techniques.

TL;DR: The results showed that optimum conditions for extraction power of 60W, extraction temperature of 60°C, extraction time of 20min and ratio of water to raw material of 15:1 (ml/g) showed that UAE had the largest yield of polysaccharides.

TL;DR: In this article, the authors focus on the impact of various experimental factors on lipid digestion in oil-in-water emulsions, using a pH-stat method that simulates the small intestine.

TL;DR: In this article, acid soluble collagen and pepsin soluble collagen (PSC) from the skin of striped catfish (Pangasian- odon hypophthalmus) were isolated and characterised.

TL;DR: This review collates information regarding peptidic hydrolysates with antioxidant and antimicrobial properties isolated from vertebrate and invertebrate muscle and by-products, identifying the sources, the isolation and characterisation techniques used, and the methods used to demonstrate these bioactivities in vitro.

TL;DR: In this article, protein hydrolysates from the muscle of ornate threadfin bream produced by skipjack tuna pepsin were used as a promising source of functional peptides with antioxidant properties.

TL;DR: The study of the functional properties of the dried “Ulva lactuca” algae proved that SWC, WHC and OHC of this alga varied with temperatures and that were comparable to those of some commercial fibre rich products.

TL;DR: The use of mid-infrared spectroscopy to predict the total antioxidant capacity of vegetables provides a rapid and precise alternative to traditional wet chemistry analysis.

TL;DR: In this paper, the in vitro antioxidant activity and in vivo anti-fatigue activity of loach peptide (LP) were determined, which showed that LP contained the amino acids, which were expected to contribute to its antioxidant and antifatigue activities.

TL;DR: The presence of Leu residues in the peptide sequence in replacement of Hyp seems to play an important role in the antioxidant and ACE-inhibitory activity.

TL;DR: These components have the capacity to inhibit α-amylase and α-glucosidase activities at μM levels, which are easily achievable in the gut, and may explain the anti-diabetic properties associated with algal extracts and algal phenolics in various in vivo studies.