Morphology and Release Profile of Microcapsules Encapsulated Alpha-Pinene by Complex Coacervation

Abstract:

The chitosan-gum arabic microcapsules prepared by complex coacervation were chosen as carrier for a model insect semiochemicals, α-pinene, owing non-toxicity of the polymers and mild conditions of the method. The coated colloids were characterized using scanning electron microscopy (SEM). The release of α-pinene from microspheres was studied in simulated conditions. The results showed that α-pinene-loaded microspheres which were obtained by association had a mean diameter of 5±0.5µm. The encapsulation efficiency and the encapsulation yield of the α-pinene-loaded microspheres were about 51.70±2.5% and 42.11±2.3%, respectively. The release experiments revealed that polyelectrolytes prolonged the release time of the encapsulated α-pinene. The release rate of α-pinene from the microspheres was proportional to the release time.

References

[1] P.D. Cox: Journal of Stored Products Research 40 (2004) 1-25.

[2] J.S. Zhang, N.N. Z hao, Q.Z. Liu, Z.L. Liu, S.S. Du, L. Zhou, Z.W. Deng: J Agric Food Chem. 59 (2011) 9910-9915.

[3] R.J. Petroski, D.W. Stanley: J Agric Food Chem. 57 (2009) 8171-8179.

[4] B.A. Kimball, J.R. Mason, F.S. Blom, J.J. Johnston, D.E. Zemlicka: J Agric Food Chem. 48 (2000) 1892-1897.

[5] J.B. Morin, J.K. Sello: Org Lett. 12 (2010) 3522-3524.

[6] J. Pernaa, M. Aksela: J. Chem. Educ. 88 (2011) 1644-1647.

[7] K. Zhang, H.M. Zhang, X.C. Hu, S.S. Bao, H. Huang: Colloids Surf. B: Biointerfaces 89 (2012) 61-66.

[8] Z.J. Dong, Y. Ma, K. Hayat, C.S. Jia, S.Q. Xia, X.M. Zhang: Journal of Food Engineering 104 (2011) 455-460.

[9] A.R. Bachtsi, C. Kiparissides: Journal of Controlled Release 38 (1996) 49-58.

[10] S.A. Riyajan, J.T. Sakdapipanich: Chem. Eng. J. 152 (2009) 591-597.