ผลของน้ำส้มควันไม้และน้ำมันหอมระเหยบางชนิดต่ออายุการเก็บรักษาของมันเทศ
อุดมพร แพ่งนคร และธนัชสัณห์ พูนไพบูลย์พิพัฒน์
วารสารวิทยาศาสตร์เกษตร 44 (3พิเศษ): 190-193. 2556.
2556
บทคัดย่อ
Sweet potato weevil is the major pest of sweet potatoes before and after harvest.Recently, coating agricultural produce has been widely used for quality maintenance and shelf-life extension. In this study, the essential oils from citronella grass, lemon grass and clove as well as wood vinegar were used as repellent and for protection against insect pest infestation. Sweet potatoes cvs. Taiwan and PROC No.65-16 and plastic film were coated with these essential oils and wood vinegar. The coated produce was placed in foam trays overwrapped with the coated plastic film and stored at 25ºC for 3 weeks. There was no significant difference in weight loss, firmness or color change among the treated sweet potatoes. At the end of storage, weight loss ranged between 5.69-23.31% while firmness was in the range of 0.09-0.14 N/mm. Skin and flesh color became darker. All the treatments could not extend the storage life of sweet potato. When the efficacy of insect pest control was considered, however, coating with citronella grass oil was the most effective, followed by coating with lemongrass, clove oils and wood vinegar. Additionally, it was found that wood vinegar served as repellent and inhibited the development of sweet potato weevil eggs.