LDPE : low density poly HDPE : high density. polyethylene terephthalate. GC AEDA aroma extract dilution assay PET +* ,* ppb.

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1 Peanuts Oil FD Factor Odor ++ Compound AEDA GCOH Quality (ml) ethyl- -methylbutanoate + / fruity -ethyl--/-dimethylpyrazine + 4/ roasty --diethyl-+-/ -methylpyrazine + 4/ roasty ( Z)- -nonenal + + fatty green ( EE)-.-decadienal + fatty ( E)-b-damascenone + apple-like ethyl isobutyrate + / fruity --mercapto--butanone + 4+ meat-like -methylpropanal 4+ malty --metylbutanal + 4+ malty + LDPE : low density poly ethylene HDPE : high density polyethylene PET : + polyethylene terephthalate GC AEDA aroma extract dilution assay + PET + + FD PET - nonanal decanal ppb 2+ 2/ : tmatsui@agr.kyushu-u.ac.jp

2 J. Japan Association on Odor Environment Vol. -3 No pentanal ( E)- -pentenal hexanal ( Z)---hexenal heptanal ( EZ) or ( EE)-. -heptadienal ( E)- -heptenal ( EZ)- 0 -nonadienal octanal.1 -decatrienal ( Z) or ( E)- -octenal ( EZ) or ( E E)-. -decadienal + LDPE GC GC : DB-WAX./ mm- m 0 - -min - - acetaldehyde + -penten---one acetic acid propanal --penten--one ( E)- -butenal - -butadione hexanal + -hepten---one octanal + -octane---one nonanal + -nonen---one ( E)- -nonenal ( E)-2-nonenal ao ( Z)-- -hexenal ( EE)- 0 -nonadienal - nm - PET ( E)-2-nonenal. - nm PVDC : poly vinylidene chloride ( E)-2-nonenal +- + Sorption GC + Adsorption Cohesion Absorption d-

3 110-3 limonene + ppm MDPE / PET - d- limonene / d- EVOH limonene MDPE MDPE PET. MDPE medium density poly ethylene : PE PET EVOH ethylene-vinylalchol copolymer : - mol MDPE EVOH / mm + Henry - Arrhenius Arrhenius MDPE PET EVOH 2 ethyl hexanoate 1/ ethyl octanoate /1 4/.43 2 octanal decanal octanol decanol myrcene d-limonene OPP OPP biaxial oriented polpropylen :

4 J. Japan Association on Odor Environment Vol. -3 No ph LDPE Compatibility -+ SP ph ph -0 ph Solubility PapH pka ph 0 1 rameter : SP SP d : Jcm or MPa pka : ph / A Henderson-Hasselbalch dh RTV : phpkaloga HA H ester U - - V cm mol P U SDS sodium dodecylsulfate : U H PV + sugar- E - E U H PVH RT de SP d V coh coh coh + +

5 SP - / df dp SP Paik 2 SP + Auras Small van Krevelen Hoy Fedors SP d Hansen 0 SP E London dd V : + deivi dp dh ei Vi Hansen Tg / V n- Vi. n n- Vi n d coh d dd dp dh -- n Fedors SP SP G /

6 J. Japan Association on Odor Environment Vol. -3 No da dsdp GHTS ln S r. 1. da G H TS da Chen d d S HTS H E E s + H cc c Vd d d d RT H Flory-Huggins c RT HE E ff s pvsdsdp ff s p s Hm f da H H HTS H H dsdp SP / SP H d d d d da HHVsff s pdsdp da / fsfp fsfp+ MDPE EVOH -2mol S Hs H da S Arrhenius da SS exphsrt S expvsdsdp RT S expvsda RT p p MDPE t+ t c np+ np p+ p np+ np p+ p : 3. + MPa S 1 mgcm ppm Paik da + EVOH : 3. MPa S PP mgcm ppm - Auras c

7 114-3 / MDPE EVOH n-decane d-limonene ethyl octanoate n-decanal nerol n-decanol 41 // / / / Hansen da - + da 0 da LDPE SP + +/ SP +- H d. Hv H Hv HvH Vsds RT Hs HsHvHmVsds RTVs Vs ds RT SS exphsrt S expvs ds RTRT SS exphsrts expvs RT S expvsds RT -. LDPE Vs RT ht hm +. +/ 1 0 Hm hthm fwfsxwvwxsvsdwds dw SP.1. 3 MPa + +0 H

8 J. Japan Association on Odor Environment Vol. -3 No mol A.K. : Identification of 2-nonenal as an important contributor to plastic o# -odor in polyethylene packaging. J. Agric. Food Chem. / (/). / Ishikawa H. Matsui T. Ohtsu T. Watanabe K. Matsumoto K. Matsumoto K. : ph of solution greatly a# ects a sorption of ionized compounds into plastic film. J. Agric. Food Chem. / (/). 0 Van Krevelen D.W. In Properties of Polymers Elsevier (Amsterdam) Chapter 1 ( +33 ). 1 Hildebrand J.H. Prausnitz J.M. Scott R.L. : Heat of Mixing In Regular and related solutions Van Nostrand Reinold (New York) Chapter 0 ( +31 ). 2 Paik J.S. Tigani M.A. : Application of regular solution theory in predicting equlibrium sorption of flavor compounds by packaging polymers. J. Agric. Food Chem ( +33-). 3 Matsui T. Nagashima K. Fukamachi M. Shimoda M. Osajima Y. : Application of the Solubility Parameter in estimating the sorption behavior of flavor into packaging film. J. Agric. Food Chem / EVOH 3-. ; Ht htxs Ht Xw Vsdwds fw+ Vs dwdv RT Ht Hv : +1 PP EVA HvHtVsdwds Hv Hs HsHvHm Vsdwds Vs SS expdhsrt S expvsdwds RT 1 dw LDPE 1 LDPE : : : : + Matsui T. Guth H. Grosch W. : A comparative study of potent odorants in peanut hazelnut and pumpkin seed oils on the basis of aroma extract dilution analysis (AEDA) and gas chromatography-olfactometry of headspace samples (GCOH). Fett/Lipid + /+ /0 ( +332). : Polyethylene terephthalate : P Sanders R.A. Zyzak D.V. Morsch T.R. Zimmerman S.P. Searles P.M. Strothers M.A. Eberhart B.L. Woo ( +33 ). + Auras R. Harte B. Selke S. : Sorption of ethyl acetate and d-limonene in poly(lactide) polymers. J. Sci. Food Agric /0 (0). ++ Paik J.S. Writer M.S. : Prediction of flavor sorption using the Flory-Huggins equation. J. Agric. Food Chem..- +1/ +12 ( +33/ ). + Chen S.A. : Polymer miscibility in organic solvents and in plasticizers ; a two-dimensional approach. J.

9 116-3 Appl. Polym. Sci. +/ ( +31+ ). Derivatization of thermodynamic sorption equation of +- : flavors with packaging films (). J. Agric. Food Chem / ( +33. ). +. Matsui T. Fukamachi M. Shimoda M. Osajima Y.: +0 Burrell H. York W. : In Polymer Handbook John Derivatization of thermodynamic sorption equation of Wiley & Sons (New York) Chapter 1 ( +31/ ). flavors with packaging films ( + ). J. Agric. Food Chem ( +33. ). +1 : ; / Fukamachi M. Matsui T. Shimoda M. Osajima Y. : Relationship between food packaging and flavor deterioration Toshiro MATSUI Faculty of Agriculture Kyushu University Hakozaki Higashi-ku Fukuoka 2+ 2/2+ Abstract To date plastic materials have been used for packing foods as well as drugs. The crucial factor required for the use of plastics as food package is a safety. For packed foods factors to keep a quality of food are also required for package properties. In particular flavors responsible for food quality are closely associated with quality degradation due to the interaction of packed flavor with plastic materials. Thus this review has been focused on the relationship between packaging materials and flavor degradation behavior. Key words : sorption packaging plastics flavor flavor deterioration

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