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Determination of hexavalent chromium in leather by ion-exchange chromatography
(2014-09-01)
Article
Restricted access - publisher's policyThe determination of traces of hexavalent chromium in leather and in leather consumer goods is carried out by ion-exchange chromatography. Samples are extracted at pH7.5-8 with a phosphate buffer, according to the method ... -
Modelling extraction of white tea polyphenols: the influence of temperature and ethanol concentration
(2014)
Article
Open AccessThe optimization of the extraction of natural antioxidants from white tea has fostered intensive research. This study has investigated the effects of ethanol-water mixtures, temperature and time on the extraction of ... -
Isocyanate toughening of pCBT/organoclay nanocomposites with exfoliated structure and enhanced mechanical properties
(2014-12-01)
Article
Restricted access - publisher's policyCyclic butylene terephthalate (CBT (R)) is an interesting matrix material for the preparation of nanocomposites due to its very low, water-like melt viscosity which favours clay exfoliation. Nevertheless, polymerized CBT ... -
Use of lyophilised and powdered Gentiana lutea root in fresh beef patties stored under different atmospheres
(2014-08-19)
Article
Restricted access - publisher's policyGentiana lutea root is a medicinal herb that contains many active compounds which contribute to physiological effects, and it has recently attracted much attention as a natural source of antioxidants. The aim of this ... -
Characterization of phytochemicals in petals of different colours from viola × wittrockiana gams and their correlation with antioxidant activity
(2014-08-15)
Article
Open AccessA study to establish relationship between the petal colour, extraction solvent, phenolic, flavonoid, anthocyanin content and antioxidant activity in three varieties of Viola × wittrockiana (yellow, red and violet) is ... -
Avocado seeds: extraction optimization and possible use as antioxidant in food
(2014-06)
Article
Open AccessConsumption of avocado (Persea americana Mill) has increased worldwide in recent years. Part of this food (skin and seed) is lost during processing. However, a high proportion of bioactive substances, such as polyphenols, ... -
Extraction of antioxidants from borage (Borago officinalis L.) leaves—Optimization by response surface method and application in oil-in-water emulsions
(2014-05)
Article
Open AccessBorage (Borago officinalis L.) is a typical Spanish plant. During processing, 60% are leaves. The aim of this work is to model and optimize the extraction of polyphenol from borage leaves using the response surface method ... -
A dehydration process for ovine hide to obtain a new collagenous material
(2014-04-09)
Article
Restricted access - publisher's policyThe aim of the present work is to develop a dehydration process for ovine hide to obtain a new collagenous material for use in the leather industry. What is obtained through this new process is a dry and very porous ... -
Radical Scavenging of White Tea and Its Flavonoid Constituents by 2 Electron Paramagnetic Resonance (EPR) Spectroscopy
(2014-06)
Article
Restricted access - publisher's policyWhite tea (WT) presents high levels of catechins, which are known to reduce oxidative stress. WT is the least processed tea, unfermented and prepared only from very young tea leaves. The subject of this paper is the use ... -
Screening of antioxidant activity of Gentian Lutea root and its application in Oil-in-Water Emulsions
(2014)
Article
Open AccessGentiana Lutea root (G. Lutea) is a medicinal herb, traditionally used as a bitter tonic in gastrointestinal ailments for improving the digestive system. The active principles of G. Lutea were found to be secoiridoid bitter ... -
New challenges in chrome-free leathers: development of wet-bright process
(2014-04-01)
Article
Restricted access - publisher's policyThe aim of the present work was to develop a new tanning process (wet-bright) that produces perfectly white leather meeting all of the requirements for many kinds of articles, such as automotive, garment and shoe upper. ... -
Sheets of branched poly(lactic acid) obtained by one-step reactive extrusion-calendering process: physical aging and fracture behavior
(2014-06-01)
Article
Restricted access - publisher's policyThe architectural modifications of a linear poly(D,L-Lactide) acid (PD,L-LA) commercial grade were induced by a one-step reactive extrusion-calendering process using a styrene-glycidyl acrylate copolymer as reactive agent. ...
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