Host: The Japan Society Cookery Science
Name : 2021Annual Meeting of The Japan Society Cookery Science 2021
Location : [in Japanese]
Date : September 07, 2021 - September 08, 2021
Located in the northern part of Nagano Prefecture, Iizuna Town's main industry is agriculture. In addition to rice, the town is famous for its apples, which account for about 1.28percent of the total apple shipments in Japan. In order to clarify the characteristics of Fuji apples produced in Iizuna town, a comparison was made between Fuji apples produced in other regions and apples of the same standard.
Fuji from other regions were selected from four regions, one from Nagano Prefecture and three from outside the prefecture (Prefectures A, B and C). The apples were selected so that there would be no difference in the weight of the apples. A sensory test was conducted as a method of comparison. Thirty volunteers from Nagano Prefectural University (29 females and 1 male, aged 18 or 19 years) who were healthy and had no taste problems were selected as test subjects. In the sensory test, Fuji from Iizuna was used as a control, and other Fuji from other regions were evaluated on a 5 point scale for sourness, sourness preference, sweetness, sweetness preference, hardness, crispness, and overall preference. The ranking method was also used to examine the preferences of each region. Next, we measured the sugar-acid content of Fuji juice from each region. The sugar acidity of the juice from each region was measured, and the closest in weight was selected for each of the three measurements.
The results of the sensory test showed that the sourness of Fuji from Iizuna town ignificantly stronger than those from A and C prefectures. As a result of the sensory test, sourness was significantly stronger in Iizuna town in A and C prefectures, sweetness was significantly stronger in Iizuna town in A prefectures, and hardness was significantly harder in Iizuna town than in A and B prefectures. The results of the ranking method showed that the ones from Iizuna town were significantly preferred over the ones from A and B prefectures. As for the juice, Iizuna town-grown Fuji had the highest sugar content and the highest acidity. Fuji from Iizuna town was harder and tastier than those from other regions.
