Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

Постоянный URI для этого сообществаhttps://cris.qyzpu.edu.kz/handle/123456789/1

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2019 - 201912020 - 20221

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Язык: search.filters.language.АнглийскийТема: search.filters.subject.humic substances

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    Тип записи:Публикация,
    DATA ON ANTIOXIDANT ACTIVITY OF HUMIC SUBSTANCES OF LOW-MINERALIZED SLUDGE SULPHIDE MUD (PELOIDS) AND THEIR CLASSIFICATION (Review)
    (National Academy of Sciences of the Republic of Kazakhstan, 2019-06-15)
    Zhaksyntay Kairbekovich Kairbekov
    ;
    A. S. Maloletnev
    ;
    I.M. Jeldybayeva
    ;
    Didar Zamanbekovna Abilmazhinova
    The quality and depth of content Web of Science offers to researchers, authors, publishers, and institutions sets it apart from other research databases.The inclusion of News of NAS RK.Series of chemistry and technologies in the Emerging Sources Citation Index demonstrates our dedication to providing the most relevant and influential content of chemical sciences to our community.Қазақстан Республикасы Ұлттық ғылым академиясы "ҚР ҰҒА Хабарлары.Химия жəне технология сериясы" ғылыми журналының Web of Science-тің жаңаланған нұсқасы Emerging Sources Citation Index-те индекстелуге қабылданғанын хабарлайды.
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    Physicochemical and Antioxidant Properties of Humic Substances from Coals of the Oy-Karagay and Kiyakty Deposits in the Republic of Kazakhstan
    (Pleiades Publishing, 2022-12-01)
    Индира Мухаметкеримовна Джелдыбаева
    ;
    Ж. К. Каирбеков
    ;
    A. S. Maloletnev
    ;
    Didar Zamanbekovna Abilmazhinova
    ;
    S.M. Suimbayeva
    Abstract The results of studies on the physicochemical and antioxidant properties of humic acids (HAs) and hymatomelanic acids (HMAs) from brown coals of deposits in the Republic of Kazakhstan are presented. It was found that the molecular structure of HAs from coals of the Oy-Karagay and Kiyakty deposits has functional groups of carbonyl, hydroxyl, and aliphatic nature as structural elements. The test samples of coals and HAs were characterized by the occurrence of paramagnetic centers (PMCs) with the Lande spectroscopic splitting factor values above 2.00, which indicate the presence of free radicals caused by a strongly delocalized electron cloud in the molecules of coals and HAs. The results of the amperometric determination of the antioxidant properties of HMAs indicated that the HMAs exhibit antioxidant activity, which will allow them to be used as a biologically active additive in the production of pharmaceutical preparations.
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