Proc. Fla. State Hart. Soc. 111:251-255. 1998. WAX MICROEMULSION FORMULATIONS USED AS FRUIT COATINGS Robert D. Hagenmaier Materials and Methods U.S. Citrus and Subtropical Products Laboratory USDA, ARS, SAA Polyethylene waxes E10 and E20 were from Eastman P.O. Box 1909 Chemical (Kingsport, TN); AC629, AC680, AC673 and AC316 Winter Haven, FL 33883-1909 were from Allied Signal Inc. (Morristown, NJ); and PED121 e-mail:
[email protected] was from Clariant Corp. (Charlotte, NC). FDA approval for polyethylene wax (oxidized polyethylene) is given in 21 CFR Additional index words. Edible coatings, 'Hamlin' oranges, 172.260 (FDA, 1995). The candelilla wax (21 CFR 184.1976) 'Sunburst' tangerines. was bleached (No. 75 from Strahl & Pitsch Inc., W. Babylon, NY, type cbw2 from Berial, S. A., Mexico D. F., or No. 7808 Abstract. Wax microemulsions were made with three emulsifi- from Botanical Wax, Arlington Heights, IL) or unbleached cation techniques. Formulations are presented for making an- 'filtrada' from Berial, S. A. The beeswax (21 CFR 184.1973) ionic microemulsions with carnauba wax, candelilla wax, was from Koster Keunen Inc. (Sayville, NY). The rice bran oxidized polyethylene, beeswax, paraffin, montan wax and var wax (21 CFR 172.890) was from Strahl & Pitsch or Koster Ke ious hydrocarbon waxes, and also for making nonionic micro unen Inc. Yellow No. 3 and No. 1 carnauba wax (21 CFR emulsions with squalene, hydrocarbon waxes and rice bran 184.1978) were from Strahl & Pitsch Inc. The petroleum wax wax. Citrus fruit were coated with various mixtures of a wax (21 CFR 172.88 and 178.3710) with 61°C m.p., was Parvan emulsion and rosin.