Apimedica: Carotenoid Content a Suitable Freshness Parameter for Bee Pollen Storage

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Apimondia Apimedica-Apiquality International Forum
Oct. 22-25, 2012
Zhenjiang, China
Influence of Storage Temperature onthe Characteristics of Bee Pollen XU Xiang ^{a,b *}, DONG Jie^a,b,Sun Liping^a,b(a. Institute of Apicultural Research, ChineseAcademy of Agricultural Science, Beijing, China 100093; b. 
National ResearchCenter of Bee Product processing, Ministry of Agriculture, Beijing, China100093)Discoloration were investigatedduring the storage of lotus bee pollen at different temperatures. The loss ofthe total carotenoids content in bee pollen at various levels were occurred atdifferent temperatures during the three months period storage.
The time dependence relationshipwith the reduction of carotenoids content was best described by �rst-order kinetics.Results also revealed that carotenoid content was a suitable freshnessparameter for estimating the condition and duration of storage for bee pollensamples. Flavor formation was investigated during the storage of lotus beepollen at different temperatures. Thesecondary oxidation products were measured SPME/GC-MS analysis for thevolatiles.
Hexanal, heptanal, octanal and 2,4-heptadienal were the main oxidation volatiles in degenerative bee pollen. Allthese compounds represented groups of characteristic secondary lipid oxidationproducts derived from oxidized oleic, linoleic and linolenic acids in the beepollen samples.
[* Corresponding author. Tel./ fax:+86-010-62590442 .E-mail address: caasxx@163.com]
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