Book reviews

Foods, nutrients and food ingredients with authorised EU health claims. M.J. SADLER (Ed.). Woodhead Publishing is an imprint of Elsevier, Cambridge, UK, Waltham, US, Kidlington, UK, Series in Food Science, Technology and Nutrition: Number 263, 2014 ISBN 978-0-85709-842-9 (print), ISBN 978-0-85709-848-1 (e-book), 397 page

Book reviews

N.N. MISRA, O.K. SCHLÜTER and P.J. KULLEN (Eds): Cold plasma in food and agriculture. Fundamentals and applications. Elsevier Science Publishing Co Inc., 2016, 125 London Wall, London EC2Y 5AS, United Kingdom ISBN: 978-0-12-801365-6, 380 pages | K. KNOERZER, P. JULIANO and G. SMITHERS (Eds): Innovative food processing technologies. Extraction, separation, component modifi cation and process intensifi cation. Woodhead Publishing, The Offi cers’ Mess Business Centre, Royston Road, Duxford, CB22 4QH, UK, 50 Hampshire Street, 5th Floor, Cambridge, MA 02139, USA The Boulevard, Langford Lane, Kidlington, OX5 1GB, UK ISBN: 978-0-08-100294-0, 481 pages | R. CARLE and R.M. SCHWEIGGERT (Eds): Handbook on natural pigments in food and beverages. Industrial applications for improving food color. Woodhead Publishing Series in Food Science, Technology and Nutrition ,Vol. 295. Woodhead Publisher is an imprint of Elsevier, The Offi cers’ Mess Business Centre, Royston Road, Duxford, CB22 4QH. UK ISBN: 978-0-08-100371-8, 509 pages | J. SINGH and L. KAUR (Eds): Advances in potato chemistry and technology. Academic Press is an Imprint of Elsevier, London, San Diego, Cambridge, Oxford, 2nd edition, ISBN: 978-0-12-800002-1 (print), 725 page

Interfacial enzyme partitioning as a tool for constructing biosensors

To explore new possibilities of enzyme immobilization, we investigated bioactive layers prepared by a new procedure based on three-phase partitioning (TPP) of proteins. By this method a third phase or midlayer as a protein layer can be developed at the interface of a protein system containing two phases (organic solvent/aqueous salt solution). Proteins of meat origin partitioned together with bioselective material (e.g. an enzyme) after centrifugation resulted in excellent bioactive layers.In the newly developed sensor, glucose oxidase was immobilized in a layer, which was fixed on the surface of a platinum ring electrode. The biosensor was built in a flow injection analyzer (FIA) system, where the hydrogen peroxide generated during the enzymatic reactions was determined by an amperometric cell. The parameters for biochemical and electrochemical reactions (ion concentration and pH of buffer, flow rate) were optimized. The linear range of analysis by the newly developed sensor was from 0.5 to 10 mmol l–1 glucose. The biosensor could be used for more than 300 analysis

Effect of short-term storage on walnut fruit quality

Two Hungarian and two introduced walnut cultivars were examined as fresh samples and under storage. Some important compositional data were determined in order to evaluate the differences between the cultivars and the changes after storage. The cultivars’ oil contents were the same, but there was some difference in fatty acid composition; ‘Alsószentiváni 117’ had a higher mono-unsaturated fatty acid content than the others. Considering the oxidative stability, ‘Alsószentiváni 117’ contained good properties in all stages (induction time equals or higher than 10 h). Lower antioxidant capacity was measured in ‘Chandler’ samples compared to the others. ‘Alsószentiváni 117’ has higher α- and γ-tocopherol contents than the other cultivars studied. Two different drying methods were also compared in case of the Hungarian cultivars. The changes in compositional data showed no tendencies. We found that Hungarian cultivars were at least as valuable as the introduced ones

Book reviews

Nanoencapsulation technologies for the food and nutraceutical industries S.M. JAFARI (Ed.) Academic Press, Elsevier Science Publishing Co Inc., 2016, 125 London Wall, London EC2Y 5AS, United Kingdom, ISBN 978-0-12-809436-5, 610 pages | Food safety in the 21st century: Public health perspective (1st ed.) R. K. GUPTA, B. P. DUDEJA and A. S. MINHAS (Eds) Academic Press is an imprint of Elsevier, 125 London Wall, London EC2Y 5AS, United Kingdom ISBN: 978-0128017739, 624 pages | Molecular methods for the detection and characterization of foodborne and environmental pathogens R.K. GUPTA, B. P. DUDEJA and A. S. MINHAS (Eds) DEStech Publications, Inc. 439 North Duke Street, Lancaster, Pennsylvania 17602 U.S.A. ISBN No. 978-1-60595-079-2, 156 pages | Foodborne diseases 3rd edition C.E.R. DODD, T. ALDSWORTH, R.A. STEIN, D.O. CLIVER and H.P. RIEMANN (Eds) Academic Press is an imprint of Elsevier, London, UK, San Diego, USA, Cambridge, USA, Oxford, UK, 2016, ISBN: 978-0-12-385007-2 (print), 576 pages | The vitamins: Fundamental aspects in nutrition and health 5th edition G.F. COMBS and J.P. MCCLUNG (Eds) Academic Press is an imprint of Elsevier, London, UK, San Diego, USA, Cambridge, USA, Oxford, UK, 2016, ISBN: 978-0-12-802965-7, 628 page

Comparison of apples from organic and integrated farming

Prima’, ‘Gala’, ‘Remo’, ‘Topáz’, ‘Idared’, ‘Releika’, ‘Resi’, ‘Rubinola’, ‘Rajka’, ‘Rewena’ and ‘Florina’ apple cultivars, both fromorganic and integrated farming, from Pallag and Újfehértó, were compared. Average size, weight, soluble solids, titratable acidity, totalpolyphenols, free radical scavenging capacity expressed as Trolox equivalent (TEAC), copper and zinc were determined at harvest and aftercool storage. Organic apples were more acidic, while integrated fruits had mostly higher copper and zinc content. Total polyphenols andTEAC values did not show a significant difference as a function of farming technology. A principal component analysis shows the separationof provenances as well as stored and fresh apples. Results are considered as preliminary