ENGIBIO - Enginyeria i Biotecnologia
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Articles de revista [58]
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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 ... -
Tepehuaje (Lysiloma acapulcensis) una nueva opción de curtición vegetal, sostenible y natural
(2014)
Conference report
Open AccessEl creciente interés y la preocupación de la sociedad por cuidar de los recursos naturales determina que las organizaciones, cualquiera que sea su naturaleza, deban actuar para que las actividades que realicen estén en ... -
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 ... -
Reducción en la utilización de compuestos orgánicos volátiles en la industria del curtido
(2014)
Conference report
Open AccessLa curtición es una actividad industrial de larga tradición en Catalunya, que desde unos inicios totalmente artesanales ha ido evolucionando progresivamente. El proceso de curtido se basa en realizar sobre la piel en bruto ... -
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 ... -
Biosynthesis of poly(g-L-glutamic acid) and comparative studies on the biodegradability of the g- and a-enantiomeric forms of the poly (glutamic acid) by Bacillus Licheniformis NCIMB 11709
(Nova Science Publishers, Inc, 2013)
Part of book or chapter of book
Restricted access - publisher's policyPoly (y-glutamic acid), a novel polyanionic and multifunctional macromolecule synthesized by Bacillus species, has attracted considerable attention because of its eco-friendly, biodegradable and biocompatible characteristics. ... -
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 ...
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