Some physicochemical and rheological properties of starch isolated from avocado seeds

International Journal of Biological Macromolecules
Luis Chel-GuerreroD Betancur-Ancona

Abstract

Seeds from avocado (Persea americana Miller) fruit are a waste byproduct of fruit processing. Starch from avocado seed is a potential alternative starch source. Two different extraction solvents were used to isolate starch from avocado seeds, functional and rheological characteristics measured for these starches, and comparisons made to maize starch. Avocado seed powder was suspended in a solution containing 2 mM Tris, 7.5 mM NaCl and 80 mM NaHSO3 (solvent A) or sodium bisulphite solution (1500 ppm SO2, solvent B). Solvent type had no influence (p>0.05) on starch properties. Amylose content was 15-16%. Gelatinization temperature range was 56-74 °C, peak temperature was 65.7 °C, and transition enthalpy was 11.4-11.6J/g. At 90 °C, solubility was 19-20%, swelling power 28-30 g water/g starch, and water absorption capacity was 22-24 g water/g starch. Pasting properties were initial temperature 72 °C; maximum viscosity 380-390 BU; breakdown -2 BU; consistency 200 BU; and setback 198 BU. Avocado seed starch dispersions (5% w/v) were characterized as viscoelastic systems, with G'>G″. Avocado seed starch has potential applications as a thickening and gelling agent in food systems, as a vehicle in pharmaceutical systems and an ingredien...Continue Reading

References

Jul 13, 2002·Biopolymers·T Y BograchevaC L Hedley
Apr 3, 2003·Journal of Agricultural and Food Chemistry·Oluwatooyin F OsundahunsiEyal Shimoni

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Citations

Nov 14, 2016·Environmental Science and Pollution Research International·Sook Yan ChoyRamakrishnan Nagasundara Ramanan
May 23, 2019·Recent Patents on Biotechnology·Valente Chaves GabrielaMachado Bruna Aparecida Souza
Oct 4, 2018·Current Drug Discovery Technologies·Raja ChakrabortySaikat Sen
Jan 18, 2021·International Journal of Biological Macromolecules·Jizhong WangXinxin Wu
Dec 10, 2020·Food Research International·Norma Julieta Salazar-LópezG A González-Aguilar
Jun 3, 2021·Polymers·Anthony Mora-SandíJosé Roberto Vega-Baudrit
Aug 5, 2021·ACS Applied Materials & Interfaces·Danila MerinoAthanassia Athanassiou

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