Page 109 - 《精细化工》2019年第11期
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第 11 期                       孟祥俭,等:  二甲酸钾微胶囊的构建与缓释抑菌性                                   ·2257·


            2.7    微胶囊的抑菌性能分析                                  微胶囊质量浓度在 12~48  g/L 之间逐渐增加时,微
                 图 11 为微胶囊在不同质量浓度下对大肠杆菌                        囊中的二甲酸钾浓度逐渐变大,对大肠杆菌的抑制
            的抑菌率。可以看出:当微胶囊质量浓度在 12~                            率显著增加,抑菌率最大可以达到 85%;当质量浓
            48 g/L 之间,随着浓度的增加对大肠杆菌的抑制率                         度大于 48  g/L,微胶囊的聚电解质膜和沸石分子筛
            呈直线上升,最高可达 85%,这是因为微胶囊在有                           过度吸水,使分子筛中的二甲酸钾在溶液中不能得
            效浓度范围内,随着浓度的增大,释放的二甲酸钾                             到充分释放,导致抑菌率升高缓慢,达到了抑制大
            增多,抑制大肠杆菌生长和繁殖的效果增强;当浓                             肠杆菌生长和繁殖的效果,为促进断奶仔猪的生长
            度超过 48  g/L,抑菌率缓慢升高,抑菌效果变化不                        发育提供了一种新型可行的研究。
            明显,这可能是微胶囊浓度过高,聚电解质膜和沸
                                                               参考文献:
            石分子筛过度吸收了培养基中的水分,导致二甲酸钾
            不能充分溶解于溶液中,而得不到全部释放和分解。                            [1]   Xia S, Yao W, Zou B, et al. Effects of potassium diformate on the
                                                                   gastric  function  of  weaning  piglets[J].  Animal  Production  Science,
                                                                   2016, 56(7): 1161-1166.
                                                               [2]   Ragaa N M, Korany R M S. Studying the effect of formic acid and
                                                                   potassium  diformate  on  performance,  immunity  and  gut  health  of
                                                                   broiler chickens[J]. Animal Nutrition, 2016, 2(4): 296-302.
                                                               [3]   Yuan X, Wen A, Dong Z, et al. Effects of formic acid and potassium
                                                                   diformate  on  the  fermentation  quality,  chemical  composition  and
                                                                   aerobic stability of alfalfa silage[J]. Grass & Forage Science, 2017,
                                                                   72(4): 833-839.
                                                               [4]   Costa R, Ribeiro C, Lopes A C, et al. Osteoblast, fibroblast and in
                                                                   vivo biological response to poly(vinylidene fluoride) based composite
                                                                   materials[J].  Journal  of  Materials  Science  Materials  in  Medicine,
                                                                   2013, 24(2): 395-403.

            图 11    不同质量浓度微胶囊缓释液对大肠杆菌生长的抑                      [5]   Petushkov A. Toxicity of silica nanomaterials: zeolites, mesoporous
                                                                   silica, and amorphous silica nanoparticles[J]. Advances in Molecular
                   制率
                                                                   Toxicology, 2010, 4(10): 223-266.
            Fig. 11    Inhibition rate of E. coli growth by microcapsules
                    with different concentrations              [6]   Khodaverdi  E,  Honarmandi  R,  Alibolandi  M,  et al.  Evaluation  of
                                                                   synthetic  zeolites  as  oral  delivery  vehicle  for  anti-inflammatory
                                                                   drugs[J].  Iranian  Journal  of  Basic  Medical  Sciences,  2014,  17(5):
            3    结论                                                337-343.
                                                               [7]   Serri  C,  De  Gennaro  B,  Quagliariello  V,  et al.  Surface  modified
                 (1)利用复凝聚法制备出壳聚糖/海藻酸钠/沸                            zeolite-based  granulates  for  the  sustained  release  of  diclofenac
                                                                   sodium[J]. European Journal of Pharmaceutical Sciences, 2017, 99:
            石分子筛/二甲酸钾的缓释微胶囊,通过 FTIR和 XPS
                                                                   202-208.
            分析得到:在芯材中,分子筛中的钠被二甲酸钾中                             [8]   Khodaverdi  E,  Soleimani  H  A,  Mohammadpour  F,  et al.  Synthetic
            的钾置换,分子筛中 Al—O 结构的 O 能与二甲酸钾中                           zeolites as controlled release delivery systems for anti-inflammatory
            的 H 形成氢键;在壳材料中,壳聚糖中的—NH 2 和海                           drugs.[J]. Chemical Biology & Drug Design, 2016, 87(6): 849-857.
                                                               [9]   Mukhopadhyay  P,  Maity  S,  Chakraborty  S,  et al.  Oral  delivery  of
            藻酸钠中的—COO—发生强静电作用,形成具有强
                                                                   quercetin  to  diabetic  animals  using  novel  pH  responsive
            pH 敏感性的聚电解质膜;进而得到微胶囊。                                  carboxypropionylated   chitosan/alginate   microparticles[J].   Rsc
                 (2)通过微胶囊的酸度和缓释测试分析发现:                             Advances, 2016, 6: 73210-73221.
            在模拟 pH=2.0 的胃液环境中,聚电解质膜不破裂,                        [10]  Ma Shuqiang (马树强), Peng Jianqiang (彭建强), Li Zhongtan (李中
                                                                   檀),  et al.  Preparation  and  in vitro  detection  of  osteogenic  growth
            二甲酸钾没有释放;在模拟 pH=7.2 的肠道环境中,
                                                                   peptide chitosan-alginate microspheres[J]. China Tissue Engineering
            微胶囊中的聚电解质膜破裂,沸石分子筛中的二甲                                 Research (中国组织工程研究), 2012, 16(25): 4663-4666.
            酸钾得到释放,且在 3  h 内,钾离子的浓度逐渐增                         [11]  Mukhopadhyay  P,  Maity  S,  Mandal  S,  et al.  Preparation,
            大,达到 27.50 mg/L,3 h 之后,浓度几乎无变化,                        characterization  and  in vitro  evaluation  of  pH  sensitive,  safe
                                                                   quercetin-succinylated  chitosan-alginate  core-shell-corona  nanoparticle
            此时微胶囊中的二甲酸钾得到全部释放,并且肠道
                                                                   for diabetes treatment[J]. Carbohydrate Polymers, 2018, 182: 42-51.
            pH 由 7.2 下降至 5.9,这有效降低了肠道 pH。药物                    [12]  Treenate  P,  Monvisade  P.  In vitro  drug  release  profiles  of
            的包封率为 68.33%,微胶囊中二甲酸钾的释放量为                             pH-sensitive  hydroxyethylacryl  chitosan/sodium  alginate  hydrogels
            137.50 mg/g,有效发挥了微胶囊的定向缓慢释放药                           using paracetamol as a soluble model drug[J]. International Journal
                                                                   of Biological Macromolecules, 2017, 99: 71-78.
            物的功效。

                 (3)通过微胶囊的抗菌性能测试分析得到:当                                                       (下转第 2266 页)
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