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| Hironaka, Kazunori; Itaya, Toshihiko; Koaze, Hiroshi; Yamamoto, Kazuo; Sato, Tadatoshi; Kojima, Michiyuki; Mori, Motoyuki; Tsuda, Shogo; 弘中, 和憲; 板谷, 俊彦; 小疇, 浩; 山本, 和夫; 佐藤, 禎稔; 小嶋, 道之; 森, 元幸; 津田, 昌吾. |
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Palavras-chave: ジャガイモ; ポリフェノールオキシダーゼ; PH; 基質; Potato tuber; PPO; Substrate. |
| Ano: 2008 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2270 |
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| サビニアーノ, ナオミ S.; 石橋, 憲一; 弘中, 和憲; 山本, 和夫; SABINIANO, Naomy S.; Ishibashi, Ken-ichi; Hironaka, Kazunori; Yamamoto, Kazuo. |
| The effect of temperature on the properties of potato starch during storage at 1, 5 and 10 centigrade for 6 months were determined. The Brabender peak viscosity, final viscosity at 92.5 centigrade breakdown, swelling power, solubility and phosphorus content decreased while initial pasting temperature, temperature at peak viscosity and blue value of the starches increased during storage. Phosphorus content was highly correlated with Brabender peak viscosity and breakdown(r =0.92 and 0.82, respectively, p<0.01). Higher rates of decrease in viscosity and phosphorus content occurred at 1 and 10 centigrade during storage.... |
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Palavras-chave: Potato storage; Potato starch; Brabender viscosity; Swelling power; Solubility; Phosphorus; Blue value; 馬鈴薯貯蔵; 馬鈴薯デンプン; ブラベンダー粘度; 膨潤度; 溶解度; リン含量; 青価. |
| Ano: 1994 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1862 |
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| Hironaka, Kazunori; Shimizu, Akira; Koaze, Hiroshi; Yamamoto, Kazuo; Sato, Tadatoshi; Kojima, Michiyuki; Mori, Motoyuki; Tsuda, Shogo; 弘中, 和憲; 清水, 明; 小疇, 浩; 山本, 和夫; 佐藤, 禎稔; 小嶋, 道之; 森, 元幸; 津田, 昌吾. |
| The pH, polyphenol content and polyphenol oxidase (PPO) activity in stem end, middle, and bud end of Norin No. 1 potatoes, one of processing varieties in Japan, were measured to investigate their respective distributions. The stem end area had a higher pH and PPO activity in the three areas. This result points out that careful harvesting and postharvest handling are needed especially at the stem end area of potatoes because of its high PPO activity. |
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Palavras-chave: 分布; ジャガイモ; PH; ポリフェノール; ポリフェノールオキシダーゼ; Distribution; Potato tuber; Polyphenol; Polyphenol oxidase. |
| Ano: 2008 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2271 |
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| 池田, 大輔; 石橋, 憲一; 野田, 高弘; 弘中, 和憲; 小疇, 浩; 山本, 和夫; Ikeda, Daisuke; Ishibashi, Ken-ichi; Noda, Takahiro; Hironaka, Kazunori; Koaze, Hiroshi; Yamamoto, Kazuo. |
| Potato tubers(cv.，Inka-no-mezame，Inka Red，Kitamurasaki，Danshaku and Kitahime)were stored at 4℃ for about 8 months and changes in physicochemical properties of starches isolated from potatoes were examined periodically during storage. Both average granule size and phosphorus content of starches were decreased during low temperature storage. However， the blue values of starches from five cultivars were increased with the increasing duration of storage period. These changes may suggest that amylopectin of the outer surface of starch granules is gradually converted to sugars during cold storage. There was no clear tendency regarding swelling power and solubility of starches during storage. From RVA analysis，the pasting temperature of Inka Red and... |
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Palavras-chave: Potato starch; Low temperature storage; Physicochemical properties. |
| Ano: 2005 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2965 |
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| 安田, 久美; 石橋, 憲一; 弘中, 和憲; 小疇, 浩; 山本, 和夫; Yasuda, Kumi; Ishibashi, Kenichi; Hironaka, Kazunori; Koaze, Hiroshi; Yamamoto, Kazuo. |
| 無水酢酸を用いた酢酸化分級馬鈴薯澱粉の物理化学特性を調べた．1)無水酢酸添加量の増加にしたがい，酢酸化分級馬鈴薯澱粉の物理化学特性は次のように変化した．(1)アセチル基含量が増加した．(2)蒸留水中のRVA特性値(糊化開始温度，最高粘度およびブレークダウン)，DSC特性値(糊化開始温度，糊化最高温度，糊化終了温度および糊化エンタルピー)が低下し，溶解度，膨潤度が増加した．(3)蒸留水中で調製した澱粉糊液の動的粘弾性(貯蔵弾性率および損失弾性率)が減少し，周波数依存性が認められた．各ずり速度における澱粉糊液のずり応力は低下し，チキソトロピー性が小さくなった．(4)0.1 M食塩水中で調製した4%澱粉糊液の離水率は，著しく減少した．2)酢酸化分級馬鈴薯澱粉間(大，中および小粒子)の物理化学特性には次のような差異が認められた．(1)小粒子のアセチル基含量は，中粒子および大粒子よりも高かった．(2)蒸留水中で測定したRVA最高粘度の低下は，粒径の減少にともなって大きくなった．また，蒸留水中における溶解度および膨潤度は，粒径が大きいほど高かった．(3)0.1 M食塩水中では，小粒子および中粒子の，澱粉糊液のRVA最高粘度が無水酢酸添加量の増加にともなって高くなり，その粘度の増加程度は粒径が小さいほど大きかった．(4)蒸留水中では，溶解度および膨潤度は，粒径が大きいほど高かった．0.1 M食塩水中では，粒径が大きいほど，溶解度が低くなり，膨潤度は高くなった．3)0.1 M食塩水の影響に関して，RVA最高粘度，溶解度・膨潤度が，蒸留水中に比べ，顕著に低下した． Physicochemical properties of acetylated fractionated potato starchesï¼ prepared... |
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Palavras-chave: Acetylated fractionated potato starch; Physicochemical property; Granule size. |
| Ano: 2009 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2769 |
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