Investigation on the Differences in the Yield, Quality, and Antioxidant Activity of Camellia vietnamensis Seed Oil Between the Fallen Fruits Caused by Typhoons and the Normally Harvested Fruits

The fallen Camellia vietnamensis fruits caused by typhoons are usually collected by the farmers to be processed into oil in order to decrease the loss of the disaster. Then, this report investigates the difference in the yield, quality, and antioxidant activity of the seed oil between the fallen fruits caused by the typhoons and the normally harvested fruits. The yield of seed oil from fallen fruits caused by typhoons (HCA) was significantly lower than that of normally harvested fruits (HCB). The physicochemical properties of HCA showed signs of quality deterioration. HCA seemed to optimize the fatty acid composition. HCA exhibited stronger DPPH· radical scavenging, ABTS·+ inhibitory, and ferric ion-reducing activities. Thirty-four volatile compounds were identified in both samples. HCA showed higher levels of antioxidant-rich volatiles. Overall, this investigation demonstrates that the fallen fruits caused by typhoons lead to significant seed oil yield losses and measurable quality deterioration, thereby offering clear, evidence-based insights to support more effective typhoon disaster mitigation strategies.