Effect of Physical and Chemical Extraction Methods on Yield of Chayote (Sechium edule) Tuber Starch

This study investigates the effect of physical and chemical extraction methods on the yield of starch from chayote (Sechium edule) tubers. Fresh chayote tubers were subjected to physical (water-based) and chemical (NaOH and Na₂S₂O₅) extraction methods. The yield of starch was calculated and statistically analyzed using ANOVA. Results revealed that the physical method produced the highest yield (21.62%), comparable to yields from chemical methods using Na₂S₂O₅ (0.01%) and NaOH (0.5%). The findings suggest that the extraction method significantly influences starch yield, with moderate concentrations of NaOH and Na₂S₂O₅ being effective for optimizing yield.