PMID- 26996287 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20191210 IS - 1520-5118 (Electronic) IS - 0021-8561 (Linking) VI - 64 IP - 13 DP - 2016 Apr 6 TI - Characterization of the Migration of Hop Volatiles into Different Crown Cork Liner Polymers and Can Coatings. PG - 2737-45 LID - 10.1021/acs.jafc.6b00031 [doi] AB - Absorption of hop volatiles by crown cork liner polymers and can coatings was investigated in beer during storage. All hop volatiles measured were prone to migrate into the closures, and the absorption kinetics was demonstrated to fit Fick's second law of diffusion well for a plane sheet. The extent and rate of diffusion were significantly dissimilar and were greatly dependent upon the nature of the volatile. Diffusion coefficients ranged from 1.32 x 10(-5) cm(2)/day (limonene) to 0.26 x 10(-5) cm(2)/day (alpha-humulene). The maximum amounts absorbed into the material at equilibrium were in the following order: limonene > alpha-humulene > trans-caryophyllene > myrcene >> linalool > alpha-terpineol > geraniol. With the application of low-density polyethylene (LDPE) liners with oxygen-scavenging functionality, oxygen-barrier liners made up from high-density polyethylene (HDPE) or liner polymers from a different manufacturer had no significant effect on the composition of hop volatiles in beers after prolonged storage of 55 days; however, significantly higher amounts of myrcene and limonene were found in the oxygen-barrier-type crown cork, while all other closures behaved similarly. Can coatings were demonstrated to absorb hop volatiles in a similar pattern as crown corks but to a lesser extent. Consequently, significantly higher percentages of myrcene were found in the beers. FAU - Wietstock, Philip C AU - Wietstock PC AD - Chair of Brewing Science, Department of Food Technology and Food Chemistry, Technische Universitat Berlin , Seestrasse 13, 13353 Berlin, Germany. FAU - Glattfelder, Richard AU - Glattfelder R AD - Chair of Brewing Science, Department of Food Technology and Food Chemistry, Technische Universitat Berlin , Seestrasse 13, 13353 Berlin, Germany. FAU - Garbe, Leif-Alexander AU - Garbe LA AD - Department of Agriculture and Food Sciences, Hochschule Neubrandenburg , Brodaer Strasse 2, 17033 Neubrandenburg, Germany. FAU - Methner, Frank-Jurgen AU - Methner FJ AD - Chair of Brewing Science, Department of Food Technology and Food Chemistry, Technische Universitat Berlin , Seestrasse 13, 13353 Berlin, Germany. LA - eng PT - Journal Article DEP - 20160328 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (Acyclic Monoterpenes) RN - 0 (Alkenes) RN - 0 (Cyclohexane Monoterpenes) RN - 0 (Cyclohexenes) RN - 0 (Monocyclic Sesquiterpenes) RN - 0 (Monoterpenes) RN - 0 (Polycyclic Sesquiterpenes) RN - 0 (Polymers) RN - 0 (Sesquiterpenes) RN - 0 (Terpenes) RN - 21334LVV8W (alpha-terpineol) RN - 3M39CZS25B (myrcene) RN - 54W56MD2WD (humulene) RN - 9002-88-4 (Polyethylene) RN - 9MC3I34447 (Limonene) RN - BHW853AU9H (caryophyllene) RN - D81QY6I88E (linalool) RN - L837108USY (geraniol) SB - IM MH - Acyclic Monoterpenes MH - Alkenes MH - Beer/analysis MH - Cyclohexane Monoterpenes MH - Cyclohexenes MH - Gas Chromatography-Mass Spectrometry MH - Humulus/*chemistry MH - Limonene MH - Monocyclic Sesquiterpenes MH - Monoterpenes MH - Polycyclic Sesquiterpenes MH - Polyethylene MH - Polymers/*chemistry MH - Sesquiterpenes MH - Terpenes/*analysis OTO - NOTNLM OT - can coatings OT - crown cork liner polymers OT - hop aroma OT - hop volatiles OT - scalping EDAT- 2016/03/22 06:00 MHDA- 2016/12/15 06:00 CRDT- 2016/03/22 06:00 PHST- 2016/03/22 06:00 [entrez] PHST- 2016/03/22 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] AID - 10.1021/acs.jafc.6b00031 [doi] PST - ppublish SO - J Agric Food Chem. 2016 Apr 6;64(13):2737-45. doi: 10.1021/acs.jafc.6b00031. Epub 2016 Mar 28.