In order to investigate the properties of frozen concentrated orange juice from 5 countries imported into Japan, we evaluated colorimetric value, glucose, fructose, sucrose, citric acid, L-malic acid, D-isocitric acid, L-ascorbic acid, flavonoids, and headspace volatile flavor components by principal component analysis. The products from Brazil contained a large amount of glucose and fructose, while the products from Belize had much more sucrose content. In addition, products from Israel contained high amounts of organic acids. The content of flavonoids depended on the country of origin and were not detected in products from Israel. The flavor component contained the largest amount of d-limonene in all the samples. Principal component analysis using 59 data items showed that the flavor components strongly contribute to the first principal component, and that sugars and flavonoids contribute to the second principal component. In a scatter plot using the principal component scores, products from Brazil and America were divided into two groups, but generally products were gathered and distributed by country of origin. The data analyzed in this study demonstrated that concentrated orange juice products from the same country contained similar components, suggesting that each country of origin has unique differences in components.
"},{"@language":"ja","@value":"輸入濃縮オレンジ果汁の品質特性を明らかにするために，色調，グルコース，フルクトース，スクロース，クエン酸，L-リンゴ酸，D-イソクエン酸，アスコルビン酸，フラボノイド類および香気成分を分析した．59項目のデータを用いた主成分分析により評価したところ，主成分負荷量は香気成分が第1主成分に大きく寄与し，糖類やフラボノイド成分が第2主成分に寄与することが示された．また，スコアプロットでは，ブラジル産とアメリカ合衆国産のオレンジ果汁は異なる2つの象限に分かれて分布するが，他の原産国の果汁はそれぞれ同一象限に分布することが明示された．そのため，ブラジル産とアメリカ合衆国産以外の輸入濃縮オレンジ果汁では原産国別に類似した成分が含まれていると判断された．なお，ブラジル産とアメリカ合衆国産では，製造工程に起因すると推察される香気成分の損失により2つに大別されると考えられた．さらに，オレンジ果汁の原産国別の特徴として，ブラジル産は糖類であるグルコースやフルクトースの含量が高いこと，アメリカ合衆国産は成分含量が5か国の中で中程度であること，メキシコ産は比較的香気成分量が多いこと，ベリーズ産はメキシコ産と同様に香気成分量が多いが糖類の組成が異なること，イスラエル産は香気成分量が少ないが有機酸量が多いことを明らかとした．
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