Results 11 to 20 of about 38,056 (273)
Saponification reaction system: a detailed mass transfer coefficient determination
Acta Chimica Slovenica, 2015 The saponification of an aromatic ester with an aqueous sodium hydroxide was studied within a heterogeneous reaction medium in order to determine the overall kinetics of the selected system. The extended thermo-kinetic model was developed compared to the
Darja Pečar, Andreja Goršek
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Research and application of multi-component sterol determination methods in pre-prepared dishes [PDF]
Frontiers in NutritionBackgroundPre-prepared dishes contain fats/oils, high protein, and complex seasonings, making sterol detection difficult due to multiple components and matrix interference.
Ying Ying +9 more
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Comparative Reactivity of Different Polyols in the PET Saponification Process [PDF]
AppliedChem, 2023 This work is concerned with polyethylene terephthalate (PET) saponification by different potassium compounds in various polyols as well as biodiesel’s main by-product, crude glycerol.
Valentin N. Sapunov +8 more
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Saponification of Polymethylacrylate
Kobunshi Kagaku, 1956 ポリアクリル酸メチルの鹸化機構を明らかにする目的で実験を行い, 次の結果を得た。平均重合度2780と124のポリマーのアルカリ鹸化速度はほぼ同一である。部分鹸化物のアルカリ再鹸化速度は鹸化度のみならず生成条件により異なり, 部分鹸化分子中におけるアクリル酸基とアクリル酸エステル基の両基本分子の配列状態が, 相違すると考えられる。酸鹸化反応はエステル基に関する簡単な1分子式でほぼ表し得るが, 速度定数は構造類似の低分子エステルよりはなはだしく小さい。鹸化溶液の粘度は反応の進行に伴って変化し, 粘度変化の程度は反応液の組成により異なる。これらの事実は既報の鹸化機構を支持する。ポリアクリル酸ブチルもポリアクリル酸メチルと同様の機構により鹸化が行われる。
Ichiro Sakurada +2 more
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Development of a Rapid UPLC Method for Analysis of Carotenoids in Goji Berry Extract and Evaluation of Their Transformation Affected by Saponification [PDF]
MoleculesGoji berry (Lycium barbarum L.), also known as wolfberry, is a traditional Chinese medicinal herb widely utilized as a functional food ingredient throughout East Asia. In this study, we developed a rapid high performance liquid chromatography-diode array
Bo-Yang Hsu, Chia-Hui Lin, Tsai-Hua Kao
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Saponification by Neutral Bodies [PDF]
Scientific American, 1885 A. F. Colson
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Saponification of Methylmethacrylate-Styrol Copolymer
NIPPON KAGAKU KAISHI, 1944 Akira KOTERA, Shiro TSURUTA
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Foods, 2021 Two liquid chromatographic systems, one coupled to atmospheric pressure chemical ionization and tandem mass spectrometric methods (UHPLC-APCI-MS/MS) and the other a high-performance liquid chromatographic coupled to diode array detector (HPLC-DAD) were ...
Maria Katsa +6 more
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Preparation of mono-substituted malonic acid half oxyesters (SMAHOs)
Beilstein Journal of Organic Chemistry, 2021 The use of mono-substituted malonic acid half oxyesters (SMAHOs) has been hampered by the sporadic references describing their preparation. An evaluation of different approaches has been achieved, allowing to define the best strategies to introduce ...
Tania Xavier +4 more
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Contribution of Chevreul to lipid chemistry
Oilseeds and fats, crops and lipids, 2023 Michel Eugène Chevreul entered at 17 the laboratory of Vauquelin, at the Museum. He began his investigations on animal fats in 1811. They appear as yet the most complete and the best executed experiments found in all chemistry.
Leray Claude
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