Thermal Stability of Soybean Protein Isolate-Based Oleic Acid/Stearic Acid Blend Edible Films

Abstract:

Edible films were prepared using soy protein isolate (4g/100g), oleic acid (0-2g/100g) and stearic acid (0-2g/100g). Effects of the type and ratio of fatty acids (oleic acid and stearic acid) on the thermal properties of soybean protein isolate-based films were investigated. The results indicated that the addition of oleic acid and stearic acid take a significant effect on the thermal stability of soybean protein isolate-based films, as may attribute to that oleic acid is an amphiphilic substance that interacts with both polar and hydrophobic sites on proteins, thus it could improve the functional properties of the films. Besides, the solid state and hydrophobic nature of stearic acid could help limit water diffusion in the matrix more efficiently when it is well-integrated in the matrix through the surfactant action of oleic acid.

• Periodical: Applied Mechanics and Materials (Volume 469)
• Pages: 171-174
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.469.171
• Online since: November 2013
• Authors: Ning Zhang, Si Yao Sui, Zhe Wang, Zhong Su Ma
• Keywords: Oleic Acid, Soybean Protein Isolate, Stearic Acid, Thermal Property

References

[1] Gonzalez, A., M. Cristina Strumia and C. I. Alvarez Igarzabal, 2011 Cross-linked soy protein as material for biodegradable films: Synthesis, characterization and biodegradation", "Journal of Food Engineering, Vol. 106, No. 4, pp.331-338.

DOI: 10.1016/j.jfoodeng.2011.05.030

[2] Han, J., S. Bourgeois and M. Lacroix, 2009 Protein-based coatings on peanut to minimise oil migration", "Food Chemistry, Vol. 115, No. 2, pp.462-468.

DOI: 10.1016/j.foodchem.2008.12.030

[3] Lodha, P. and A. N. Netravali, 2005 Characterization of Phytagel (R) modified soy protein isolate resin and unidirectional flax yarn reinforced "green" composites", "Polymer Composites, Vol. 26, No. 5, pp.647-659.

DOI: 10.1002/pc.20128

[4] Mauri, A. N. and M. C. Anon, 2008 Mechanical and physical properties of soy protein films with pH-modified microstructures", "Food Science and Technology International, Vol. 14, No. 2, pp.119-125.

DOI: 10.1177/1082013208092130

[5] Nayak, P., A. Sasmal, P. K. Nanda, P. L. Nayak, J. Kim and Y. W. Chang, 2008 Preparation and characterization of edible films based on soy protein isolate-fatty acid blends", "Polymer-Plastics Technology and Engineering, Vol. 47, No. 5, pp.466-472.

DOI: 10.1080/03602550801949728

[6] Ou, S. Y., K. C. Kwok and Y. J. Kang, 2004 Changes in in vitro digestibility and available lysine of soy protein isolate after formation of film", "Journal of Food Engineering, Vol. 64, No. 3, pp.301-305.

DOI: 10.1016/j.jfoodeng.2003.10.013

[7] Rhim, J. W., A. Gennadios, A. Handa, C. L. Weller and M. A. Hanna, 2000 Solubility, tensile, and color properties of modified soy protein isolate films", "Journal of Agricultural and Food Chemistry, Vol. 48, No. 10, pp.4937-4941.

DOI: 10.1021/jf0005418

[8] Rhim, J. W. and J. H. Lee, 2004 Effect of CaCl2 treatment on mechanical and moisture barrier properties of sodium alginate and soy protein-based films", "Food Science and Biotechnology, Vol. 13, No. 6, pp.728-732.

[9] Shon, J., J. H. Eo and J. B. Eun, 2010 EFFECT OF SOY PROTEIN ISOLATE COATING ON QUALITY ATTRIBUTES OF CUT RAW HAN-WOO (KOREAN COW) BEEF, AEROBICALLY PACKAGED AND HELD REFRIGERATED", "Journal of Food Quality, Vol. 2, No. 33, pp.42-60.

DOI: 10.1111/j.1745-4557.2010.00332.x

[10] Song, F., D. L. Tang, X. L. Wang and Y. Z. Wang, 2011 Biodegradable Soy Protein Isolate-Based Materials: A Review", "Biomacromolecules, Vol. 12, No. 10, pp.3369-3380.

DOI: 10.1021/bm200904x

[11] Su, J. -F., Z. Huang, X. Y. Yuan, X. Y. Wang and M. Li, 2010 Structure and properties of carboxymethyl cellulose/soy protein isolate blend edible films crosslinked by Maillard reactions", "Carbohydrate Polymers, Vol. 79, No. 1, pp.145-153.

DOI: 10.1016/j.carbpol.2009.07.035

[12] Su, J. -F., Z. Huang, Y. H. Zhao, X. Y. Yuan, X. Y. Wang and M. Li, 2010 Moisture sorption and water vapor permeability of soy protein isolate/poly(vinyl alcohol)/glycerol blend films", "Industrial Crops and Products, Vol. 31, No. 2, pp.266-276.

DOI: 10.1016/j.indcrop.2009.11.010

[13] Yin, S. -W., C. H. Tang, Q. B. Wen, and X. Q. Yang, 2007 Properties of cast films from hemp (Cannabis sativa L. ) and soy protein isolates", "A comparative study. Journal of Agricultural and Food Chemistry, Vol. 55, No. 18, pp.7399-7404.

DOI: 10.1021/jf071117a

[14] Wang, Z., Zhou, J., Wang, X. -X., Zhang, N., Sun, X. -X., and Ma Z. -S. Submitted to Food Hydrocolloids, (2013).