Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.
SME Solution Center, Korea Food Research Institute, Wanju, Republic of Korea.
J Food Sci. 2020 Oct;85(10):3363-3371. doi: 10.1111/1750-3841.15425. Epub 2020 Sep 3.
The objectives of this study were to develop insect-resistant adhesives and apply them to a cardboard packaging system for preventing Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) larvae infestation. Cinnamon essential oil (CO), an insecticide, was encapsulated with maltodextrin (CS/MD/CO), β-cyclodextrin (CS/β-CD/CO), and polyvinyl alcohol (CS/PVA/CO) in corn starch (CS) paste. This resulted in a sustained and gradual release of CO from the starch-based insect-proof adhesives. Penetration pathways of insects into corrugated cardboard boxes were investigated through the use of a screening test for infestation profiling. Microscopic images of encapsulated CO in an oil in water (O/W) emulsion were observed to confirm the morphology of the adhesives. Adhesion forces of CS, CS/CO, CS/MD/CO, CS/β-CD/CO, and CS/PVA/CO were determined to be 6.2 N, 4.0 N, 3.1 N, 6.0 N, and 5.8 N, respectively. Consequently, significant decreases of adhesion force in the CS/CO and CS/MD/CO were found to be due to the presence of the surfactant (Span 80) and the low adhesive properties of MD. The duration of the insecticidal activities of the developed adhesives was evaluated by measuring their release rates for 14 days and repellent profiles up to 24 hr and 40 days. As a result, CS/β-CD/CO and CS/PVA/CO were found to have an inhibited rapid release and sustained repellent profiles. In conclusion, CS/β-CD/CO and CS/PVA/CO were determined to be suitable for encapsulation models and could be applied to industrial cardboard containers to prevent cases of insect invasion. PRACTICAL APPLICATION: Corn starch-based natural adhesives with an insect-proof property were applied to food containers consisted of corrugated cardboard boxes. Cornflake cereal packaging using insect-proof corrugated cardboard successfully prohibited pest invasion in commercial food distribution simulation model. Developed insecticidal adhesives are able to control insect penetration in distribution and storage steps.
本研究的目的是开发防虫胶粘剂，并将其应用于纸板包装系统，以防止粉斑螟（鳞翅目：螟蛾科）幼虫的侵害。肉桂精油（CO）是一种杀虫剂，用麦芽糊精（CS/MD/CO）、β-环糊精（CS/β-CD/CO）和聚乙烯醇（CS/PVA/CO）包封在玉米淀粉（CS）糊中。这导致 CO 从基于淀粉的防虫胶中持续且逐渐释放。通过使用侵染分析筛选试验研究了昆虫进入瓦楞纸箱的渗透途径。观察水包油（O/W）乳液中包封 CO 的微观图像，以确认胶粘剂的形态。CS、CS/CO、CS/MD/CO、CS/β-CD/CO 和 CS/PVA/CO 的粘附力分别确定为 6.2 N、4.0 N、3.1 N、6.0 N 和 5.8 N。因此，CS/CO 和 CS/MD/CO 中的粘附力显著降低，这是由于存在表面活性剂（Span 80）和 MD 的低粘性。通过测量其在 14 天内的释放率以及在 24 小时和 40 天内的驱避特性来评估开发的胶粘剂的杀虫活性持续时间。结果发现，CS/β-CD/CO 和 CS/PVA/CO 具有抑制快速释放和持续驱避特性。总之，CS/β-CD/CO 和 CS/PVA/CO 被确定为适合包封模型，并可应用于工业纸板容器，以防止昆虫入侵。实际应用：将具有防虫性能的玉米淀粉基天然胶粘剂应用于由瓦楞纸箱制成的食品容器。使用防虫瓦楞纸箱的玉米片谷物包装成功地阻止了商业食品配送模拟模型中的害虫入侵。开发的杀虫胶粘剂能够控制在配送和储存过程中的昆虫穿透。
