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8種類の食用豆類に含まれるポリフェノールと抗酸化活性 OAK
小嶋, 道之; 森田, 武志; 齋藤, 優介; 西, 繁典; Kojima, Michiyuki; Morita, Takeshi; Saito, Yusuke; Nishi, Shigenori.
8種類の食用豆類に含まれるポリフェノールと抗酸化活性を比較した。豆類からの連続的な3段階の抽出法は,実験室で次のようにして行った。豆類に温水(50℃)を加え,5時間浸漬(抽出液1)し,その後種皮のみを採取して水を加え,1時間,加熱抽出した(抽出液2)。最後に,加熱抽出後の種皮に5%トリフルオロ酢酸含有のエタノールを加えてさらに1時間,種皮に強く結合しているポリフェノールを加熱抽出した(抽出液3)。全ての抽出液にポリフェノールを含んでいたが,含まれるポリフェノール量は,豆類種実の大小や種皮色との間で相関関係は認められなかった。アズキおよび赤インゲンマメの抽出液1には,ポリフェノールが多く溶出され,特にアズキの抗酸化活性が最も高かった。抽出液2にポリフェノールが多く溶出された豆類は,コクリョクトウ,リョクトウ,ソラマメ,赤インゲンマメであり,エンドウやダイズのそれはごく微量であった。また,抽出液3にポリフェノールを多く含んでいたのは,コクリョクトウ,リョクトウ,クロダイズ,赤インゲンマメ,ソラマメで,種皮に強く結合したポリフェノールを多く含有する豆類といえる。抽出液1に含まれるポリフェノールの熱安定性とpH安定性を検討したところ,4時間の加熱を続けても,豆類抽出液の活性低下はほとんど認められなかった。また,ダイズ,エンドウ,アズキ,コクリョクトウ抽出液1(pH6.5)の抗酸化活性は,pH2.0では同じ~若干上昇したが,pH10.0では低下した。塩基性条件でのアズキとエンドウの活性低下は,特に顕著であった。また,ダイズ,クロダイズおよびリョクトウ抽出液1のβ-カロチン退色抑制能は低かったが,赤インゲンマメ,コクリョクトウ,エンドウ,アズキのそれは高かった。 The antioxidative activities...
Palavras-chave: ポリフェノール; 抗酸化活性; 熱安定性; PH安定性; 豆類; Polyphenol; Antioxidative activity; Thermal stability; PH stability; Pulse.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/94
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Competition for phosphorus between two dinoflagellates: A toxic Alexandrium minutum and a non-toxic Heterocapsa triquetra ArchiMer
Labry, Claire; Erard-le Denn, Evelyne; Chapelle, Annie; Fauchot, Juliette; Youenou, Agnes; Crassous, Marie-pierre; Le Grand, Jacqueline; Lorgeoux, Benedicte.
The understanding of the dominance of one species with respect to others is a pertinent challenge in HAB growth dynamics studies and the nutrient supply mode is one of the factors potentially involved. The competition for phosphorus (P) between a toxic species, Alexandrium minutum, and a non-toxic species, Heterocapsa triquetra, was studied (1) along a gradient of P depletion, (2) testing different P depletion degrees before a single PO4 supply and (3) experimenting different PO4 supply frequencies. In conditions Of PO4 depletion, H. triquetra stopped growing after two days both in monospecific and mixed batch cultures whereas A. minutum grew progressively from day 2 until the end of the experiment. This time-lag growth of A. minutum is associated to its...
Tipo: Text Palavras-chave: Semi continuous culture; Batch culture; Ecophysiology; Pulse; Phosphorus storage; Dinoflagellates; Heterocapsa triquetra; Alexandrium minutum.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-4067.pdf
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Trends in Pulse and Oilseed Crops in Winter Cereal Rotations in NSW AgEcon
Brennan, John P.; Sykes, John D.; Scott, J. Fiona.
The key aims in this study are to assess the current level of importance of pulse and oilseed (broadleaf) crops in winter cereal rotations in NSW, and to identify recent trends. The production of broadleaf crops has increased in each region of NSW, but different crops have been favoured. Canola has played a key role in southern regions, and chickpea in the northern regions. In many areas, pulse crops have been grown more because of rotational benefits than their direct gross margins. If recent trends continue, the role of broadleaf crops will increase to 25% of the area sown to field crops in NSW by 2020. However, that will only be achieved with a focussed effort in both research and extension activities.
Tipo: Report Palavras-chave: Broadleaf crop; Oilseed; Pulse; Production; Rotation; NSW; Agribusiness; Crop Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q160.
Ano: 2005 URL: http://purl.umn.edu/42506
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Yield and nitrogen fixation potential from white lupine grown in rainfed Mediterranean environments Scientia Agricola
Sulas,Leonardo; Canu,Simone; Ledda,Luigi; Carroni,Antonio Melchiorre; Salis,Mauro.
ABSTRACT There is renewed interest in white lupine (Lupinus albus L.), which is appreciated for its high protein content, full range of essential amino acids and as N source to rainfed cropping systems. Unfortunately, information on its N2 fixation ability is limited. This study aimed to: (i) quantify the N2 fixation ability of white lupine crop at the plot field scale in three different environments of Sardinia (Italy) under Mediterranean climate; (ii) determine the allocation of the plant-fixed N into different organs; and (iii) establish the relationship between fixed N and DM within plant organs. In a 2-year experiment, N2 fixation was estimated using the 15N isotopic dilution method. The productive performances and ability of white lupine to fix N2...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lupinus albus cv. Multitalia; Fixed N; Isotopic dilution; Plant organs; Pulse.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000400338
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