Plum quality during storage . . .
38(4):299-313.
Figure 4 shows the IB for coated and uncoated plums stored 5 wk at
1 °C, followed by 3 d at 6 °C and 1 or 25 d at 20 °C. The range of IB
depended on the treatment and the storage conditions. When the
plums were stored for 1 d at 20 °C they showed low IB. At this stor-
age condition, water-dipped and uncoated plums had higher IB
than coated plums, but the level could be considered negligible.
When storage time at 20 °C was prolonged to 25 d, IB increased.
The application of the coatings significantly reduced IB compared
to water-dipped (severe IB) and uncoated (high IB) plums. Similar
behavior was obtained when plums had been previously stored 4
or 6 wk at 1 °C, followed by 3 d at 6 °C and storage at 20 °C. These
results correlate with the results found on fruit texture, where plum
quality was improved by coating application for prolonged storage
at 20 °C.
Dinamarca EA, Mitchell FG, Kader AA. 1989. Uso de esteres de sacarosa como
retardadores de maduración de peras y ciruelas. Rev Fritícola 10(3):116-21.
El-Ghaouth A, Ponnampalam R, Castaigne F, Arul J. 1992. Chitosan coating to
extend the storage life of tomatoes. HortSci 27:1016-8.
Guilbert S. 1986. Technology and application of edible protective films. In:
Matholouthi M, editor. Food packaging and preservation: Theory and practice.
London: Elsevier Applied Science Publishing Co. p 371-93.
Hagenmaier RD. 2002. The flavor of mandarin hybrids with different coatings.
Postharvest Biol & Technol 24:79-87.
Hagenmaier RD, Baker RA. 1994. Internal gases, ethanol content and gloss of
citrus fruit coated with polyethylene wax, carnauba wax, shellac or resin at
different application levels. Proc Fla State Hort Soc 107:261-5.
Kader AA. 1992. Postharvest biology and technology: An overview. In: Kader A,
editor. Postharvest technology of horticultural crops. Oakland, Calif.: Univ of
California. p 15-20.
Ke D, Kader AA. 1990. Tolerance of ‘Valencia’ oranges to controlled atmosphere
as determined by physiological responses and quality attributes. J Am Soc
Hort Sci 115:770-83.
Ke D, Rodriguez-Sinobas L, Kader AA. 1991. Physisology and prediction of fruit
tolerance to low-oxygen atmosphere. J Am Soc Hort Sci 116:253-60.
Kester JJ, Fennema OR. 1986. Edible films and coatings: a review. Food Technol
40(12):47-59.
Knuth D, Stosser R. 1987. Comparison of the sun-exposed and shaded side of
apple fruit: Cuticle, epidermal cell size and surface waxes. Gartenbauwissen-
schaft 52:49-57.
Conclusion
IPID TYPE AND CONTENT HAD AN EFFECT ON WEIGHT LOSS AND
L
ethanol build-up, which indicates their effectiveness as mois-
Kovás E, Kovás J, Zackel E, Genova J. 1994. Structural and chemical changes of
pear skin. Acta Hort 368:243-50.
ture and gas barrier. In general, 20% BW-based coatings were more
effective reducing weight loss than 20% shellac-based coatings,
whereas, 60% shellac-based coatings seemed to provide higher
moisture barrier than 60% BW-based coatings. No differences on
weight loss were observed between uncoated and 20% lipid-coated
plums, whereas water-dipped plums had significantly higher
Krochta JM, Baldwin EA, Nisperos-Carriedo M. 1994. Edible coatings and films to
improve food quality. Lancaster, Pa.: Technomic Publishing Co. 379 p.
Krochta JM, De Mulder-Johnson C. 1997. Edible and biodegradable polymer films:
challenges and opportunities. Food Technol 51(2):61-72.
Krochta JM. 1997. Edible composite moisture-barrier films. In: Blakistone B,
editor. Packaging yearbook: 1996. Washington, D.C.: National Food Processors
Association. p 38-54.
weight loss than uncoated and coated plums. These results indi- Lee JC, Kwon OW, Ryou MS. 1986. The effects of Prolong on the keeping quality
and ethylene evolution in Tsugaru apple fruits. J Korean Soc Hort Sci 27:347-
52.
cate that, in order to improve moisture barrier of ‘Autumn Giant’
plums, coatings containing more than 20% lipid need to be applied.
The application of these edible coatings improved plum quality for
prolonged storage at 20 °C, by the retention of firmness and the
reduction in internal disorders, which could be explained by the
gas barrier provided by the coatings creating a modified atmo-
sphere in the fruit.
Mitchell FG, Kader AA. 1989. Factors affecting deterioration rate. In: LaRue JH,
Johnson RS, editors. Peaches, plums, and nectarines—growing and handling
for fresh market. Oakland, Calif.: Univ of California. p 165-78.
Nguyen-The C. 1991. Structure of epidermal wall, cuticle and cuticular microc-
racks in nectarine fruit. Agronomie 11:909-20.
Pérez-Gago MB, Rojas C, Krochta JM. 2002. Effect of lipid type and amount of
edible hydroxypropyl methylcellulose-lipid composite coatings used to pro-
tect postharvest quality of mandarins cv. Fortune. J Food Sci 67:2903-10.
Price WE, Sabarez HT, Storey R, Back PJ. 2000. Role of the waxy skin layer in
moisture loss during dehydration of prunes. J Agric Food Chem 48:4193-8.
Quantick PC, Warren PJ, Zhang DL. 1996. Effects of Pro-long coating on ethylene
biosynthesis and other relevant physiological changes of banana fruit during
ripening. J Tropic Subtropic Bot 4(4):50-9.
References
Avena-Bustillo RJ, Krochta JM, Saltveit ME. 1997. Water vapor resistance of ‘Red
Delicious’ apples and celery sticks coated with edible caseinate-acetylated
monoglyceride films. J Food Sci 62:351-4.
Saltveit ME. 1999. Effect of ethylene on quality of fresh fruits and vegetables.
Postharv Biol Technol 15:279-92.
Storey R, Price WE. 1999. Microstructure of the skin of d’Agen plums. Sci Hort
81:279-86.
Baldwin EA, Nisperos-Carriedo MO, Shaw PE, Burns JK. 1995. Effect of coating
and prolonged storage conditions on fresh orange flavor volatiles, degrees
Brix, and ascorbic acid levels. J Agric Food Chem 43:1321-31.
Xuan H, Sreif J, Fokkema NJ, Beek MA. 2000. Effect of pre- and postharvest appli-
cation of ‘Biofresh’ coating on the keeping quality of apple fruits. Acta Hort
513:483-92.
MS 20020668 Submitted 11/22/02, Revised 1/6/03, Accepted 1/24/03, Received
1/27/03
Basiouny FM, Baldwin EA. 1997. The use of liquid coating compounds as posthar-
vest application to plum fruits. Proc Fla State Hort Soc 110:219-22.
Bender RJ, Brecht JK, Sargent SA, Navarro JC, Campbell CA. 1993. Ripening ini-
tiation and storage performance of avocados treated with an edible-film coat-
ing. Acta Hort 343:184-6.
Crisosto CH, Mitchell FG, Zhiguo J. 1999. Susceptibility to chilling injury of peach,
nectarine, plum cultivars grown in California. Hort Sci 34:1116-8.
Crisosto CH, Mitcham EJ, Kader AA. 2002. Plum: Recommendations for main-
taining postharvest quality. Davis, Calif.: Univ. of California, Davis. Available
Accessed Nov 20.
This work was funded by the Spanish Agriculture Dept. through the project AGL 2002-
00560. The authors also thank Dow Chemical Co. and Cat-Preymer for supplying samples of
hydroxypropyl methylcellulose and technical support.
The authors are with the Dept. de Postcosecha, Instituto Valenciano de
Investigaciones Agrarias, 46113 Moncada,Valencia (Spain). Direct inquir-
ies to author Perez-Gago (E-mail: mbperez@ivia.es).
Debeaufort F, Quezada-Gallo JA, Voilley A. 1998. Edible films and coatings: To-
morrow’s packaging: A review. Critical Reviews in Food Science and Nutrition
Vol. 68, Nr. 3, 2003—JOURNAL OF FOOD SCIENCE 883