Modifying the Sensory Properties of Cassava Starch via Simplified Pseudo-Single Step Oxidation-Esterification Process

Yaw Bee Ker, Chiu Lan Hsieh, Chiung Chi Peng, John C. Chen, Xin Yi Yen, Charng Cherng Chyau, Kuan Chou Chen, Robert Y. Peng

Research output: Contribution to journalArticle


The conventional two-step oxidation-esterification process has many defects due to its time-wasting, energy-consuming and quality-damping. To improve this, we developed a novel pseudo-single-step process (PSSP). In brief, to starch 400 g, 600 mL of sodium hypochlorite (0.7 M) (1.8% of starch) was added, pH adjusted to 8.0 and left to react for 1 h, then 1% acetic anhydride was added, pH adjusted to 8.0 and left to react for 3 h. The finished oxidized-esterified Cassava starch (COAEC) exhibited peak-, trough-, breakdown-, final- and setback viscosities as 3,507 ± 22 cp, 1,742 ± 33 cp, 1,765 ± 44 cp, 2,642 ± 34 cp and 900 ± 7 cp. FTIR identified the formation of carbonyl and carboxyl content. While X-ray diffractometry and differential scanning calorimetry further confirmed the destruction of microcrystalline structure. Sensory evaluation indicated COAEC had a score 5.3–5.7 compared to 4.9–5.2 of the native Cassava starch (score 7.0 = like extremely). Practical Applications: Pseudo-single step oxidation-esterification process has successfully modified the Cassava starch (COAEC). COAEC exhibits promisingly improved physico-chemical and sensory properties. COAEC meets the requirement for manufacturing the oriental special snacks and cold dishes.

Original languageEnglish
Article numbere12782
JournalJournal of Food Processing and Preservation
Issue number2
Publication statusPublished - 2017 Apr 1


All Science Journal Classification (ASJC) codes

  • Food Science
  • Chemistry(all)
  • Chemical Engineering(all)

Cite this