Taborda Jorge Andrés Victoria, Arango Walter Murillo, Méndez Arteaga Jonh Jairo, Guerra Almonacid Carlos Martín
Engineering Department, GIPRONUT Research Group, Faculty of Forest Engineering, Tolima University, Ibagué, Colombia.
Chemistry department, GIPRONUT Research Group, Faculty of Sciences, Tolima University, Ibagué, Colombia.
Heliyon. 2021 Jul 18;7(7):e07627. doi: 10.1016/j.heliyon.2021.e07627. eCollection 2021 Jul.
This study aimed to evaluate the release of active components with antioxidant and antihypertensive capacity from encapsulated extracts of the peel and seeds of Gulupa ( f. ) and Cholupa () in an gastrointestinal digestion model. Microencapsulated extracts were prepared with enzymatically modified rice starch as the encapsulating material and ethanol extracts of seeds and peel of f. and as encapsulated material. Microcapsule characterization was performed by scanning electron microscopy with values of 4.54-5.13 μm and ξ potential values of -6.34 mV and -6.66 mV. Dynamic light scattering (DLS) analysis was conducted with polydispersion values from 1.33 to 1.51, and dispersion stability analysis was also conducted. The total phenol content and antioxidant activities (ABTS, DPPH, and FRAP) and ACE inhibitory activity ( antihypertensive activity) were evaluated after each stage of digestion, with values greater than 80% of activity before gastrointestinal transit and with values greater than 55% activity after the end of gastrointestinal transit. Gastrointestinal evaluation of the encapsulated extracts was performed with an model using pig intestines and simulating the conditions of digestion in three phases: the gastric (pH 2.0 with 1.0 M HCl +0.5 g/L pepsin), enteric (pH 8.0 with Krebs solution +1.0 mL/L bile) and final enteric (pH 7.5 Krebs solution only) phases. The microencapsulation of passionflower extracts showed good behavior against changes in pH and enzymatic activities throughout digestion, thus promoting a controlled release and targeted delivery of bioactive compounds, undergoing a paracellular mechanism through the intestinal barrier to preserve the antioxidant activity and ACE inhibitory that was shown by the extracts before encapsulation of the material.
本研究旨在通过胃肠消化模型评估古卢帕(f.)和乔卢帕()果皮和种子的微囊化提取物中具有抗氧化和降压能力的活性成分的释放情况。以酶改性大米淀粉为包囊材料,制备了f.和的种子及果皮乙醇提取物的微囊化提取物作为包囊材料。通过扫描电子显微镜对微胶囊进行表征,其粒径值为4.54 - 5.13μm,ξ电位值为-6.34 mV和-6.66 mV。进行动态光散射(DLS)分析,多分散值为1.33至1.51,并进行了分散稳定性分析。在消化的每个阶段后评估总酚含量、抗氧化活性(ABTS、DPPH和FRAP)以及ACE抑制活性(降压活性),胃肠转运前活性值大于80%,胃肠转运结束后活性值大于55%。使用猪肠的模型对微囊化提取物进行胃肠评估,并模拟三个阶段的消化条件:胃期(pH 2.0,含1.0 M HCl + 0.5 g/L胃蛋白酶)、肠期(pH 8.0,含Krebs溶液 + 1.0 mL/L胆汁)和最终肠期(仅含pH 7.5 Krebs溶液)。西番莲提取物的微囊化在整个消化过程中对pH变化和酶活性表现出良好的耐受性,从而促进生物活性化合物的控释和靶向递送,通过肠屏障的细胞旁途径保持材料包囊前提取物所显示的抗氧化活性和ACE抑制活性。