「のらぼう菜」（Brassica napus L.）とアスパラガス（Asparagus officinalis L.）における数種の包装資材の利用が貯蔵後の品質に及ぼす影響

抄録

　Brassica napus L. (Norabona) is a traditional cultivar in the Kanto region of Japan. It has a pleasant taste, and is used in the preparation of many dishes; it has the potential to become a popular leafy vegetable in the domestic market. However, the development of optimal packaging technique to preserve its quality from the production to the sales stages is required owing to its short shelf life and rapid deterioration of its appearance. In the present study, the effect of various film packages on the postharvest quality of Norabona was investigated by comparing with that on Asparagus officinalis L. (Asparagus). We chose asparagus as a standard as many studies have reported its postharvest condition after using film packages. Norabona packed using micro-perforated modified atmosphere (MA) package, perforated polyethylene film, and conventional polypropylene open package (control), and non-filmed Norabona were stored at 25℃ (controlled room temperature) for 7 days. We analyzed properties such as respiration rate, percentage weight loss, moisture content, soluble solid, score of appearance, and hue angle. The quality of Norabona rapidly deteriorated as its respiration rate under non-filmed was remarkably higher than that of asparagus. The usage of micro-perforated MA package to store Norabona was the best in preventing weight loss and maintaining moisture content, soluble solid content, score of appearance, and hue angle. Therefore, we strongly suggest the application of an appropriate MA to preserve Norabona quality throughout the production to the sales stages.