使用玉米淀粉作为原料,通过复合酶法成功制备了具有优良特性的多孔淀粉,并对其理化性质进行了详细分析。研究结果显示,在最佳的酶解条件下,酶配比为1:3 (g/g)、酶用量为3%、底物浓度为25%、酶解时间为8 h、酶解温度为45℃、以及pH值为5....使用玉米淀粉作为原料,通过复合酶法成功制备了具有优良特性的多孔淀粉,并对其理化性质进行了详细分析。研究结果显示,在最佳的酶解条件下,酶配比为1:3 (g/g)、酶用量为3%、底物浓度为25%、酶解时间为8 h、酶解温度为45℃、以及pH值为5.5时得到的多孔淀粉展现出了较高的吸油率(189.56%)、较大的比容积(2.13 cm³/g)、合适的溶解率(13.17%)以及显著的膨胀力(3.63 g/g),这些指标均明显优于原始淀粉。扫描电子显微镜(SEM)的观察进一步证实了多孔淀粉颗粒的完整性和表面的蜂窝状微孔结构,孔径和深度均处于理想状态,所制备的多孔淀粉具有广泛的潜在应用价值。Using corn starch as raw material, porous starch with excellent properties was successfully prepared by compound enzymatic method, and its physicochemical properties were analyzed in detail. The results showed that under the optimal enzymatic hydrolysis conditions, the porous starch obtained at the enzyme ratio of 1:3 (g/g), the enzyme dosage of 3%, the substrate concentration of 25%, the enzymatic hydrolysis time of 8 h, the enzymatic hydrolysis temperature of 45˚C, and the pH value of 5.5 showed higher oil absorption rate (189.56%), larger specific volume (2.13 cm³/g), suitable solubility (13.17%) and significant swelling force (3.63 g/g), which were significantly better than those of the original starch. The observation of scanning electron microscopy (SEM) further confirmed the integrity of porous starch granules, the honeycomb microporous structure on the surface, and the pore size and depth were in an ideal state, and the prepared porous starch has a wide range of potential application value.展开更多
益生菌是对人体健康有益的一类活性微生物。由于菌体对外界环境高度敏感,在生产、储存和使用过程中容易出现存活率低或生物活性差等问题,显著降低了益生菌的益生效果。而包埋技术可以在产品的加工和贮藏过程中为益生菌提供保护,提高其...益生菌是对人体健康有益的一类活性微生物。由于菌体对外界环境高度敏感,在生产、储存和使用过程中容易出现存活率低或生物活性差等问题,显著降低了益生菌的益生效果。而包埋技术可以在产品的加工和贮藏过程中为益生菌提供保护,提高其在产品中的存活率。因此,本文就益生菌包埋技术的作用、包埋材料的选择以及淀粉在益生菌包埋技术中的应用进行综述,其中介绍了淀粉的特性和多孔淀粉在益生菌包埋技术中的优势。最后提出需要进一步研究的问题与发展建议,旨在研制出具有实际应用价值的多孔淀粉/益生菌微胶囊,为后续研究提供参考。Probiotics are a class of active microorganisms that are beneficial to human health. Due to the high sensitivity of bacteria to the external environment, it is easy to have a low survival rate or poor biological activity during production, storage and use, which significantly reduces the probiotic effect. And the embedding technology can provide protection for probiotics during the processing and storage of products, enhancing their survival rate within the products. Therefore, in this paper, the effect of probiotics embedding technology, the selection of the embedding material and starch in the application of probiotics embedding technology were reviewed, which introduces the characteristics of starch and porous starch in the advantages of probiotic embedding technology. At last, it puts forward problems that need further study and development to develop practical application value for porous starch/probiotic microcapsules and provide a reference for further research.展开更多
文摘使用玉米淀粉作为原料,通过复合酶法成功制备了具有优良特性的多孔淀粉,并对其理化性质进行了详细分析。研究结果显示,在最佳的酶解条件下,酶配比为1:3 (g/g)、酶用量为3%、底物浓度为25%、酶解时间为8 h、酶解温度为45℃、以及pH值为5.5时得到的多孔淀粉展现出了较高的吸油率(189.56%)、较大的比容积(2.13 cm³/g)、合适的溶解率(13.17%)以及显著的膨胀力(3.63 g/g),这些指标均明显优于原始淀粉。扫描电子显微镜(SEM)的观察进一步证实了多孔淀粉颗粒的完整性和表面的蜂窝状微孔结构,孔径和深度均处于理想状态,所制备的多孔淀粉具有广泛的潜在应用价值。Using corn starch as raw material, porous starch with excellent properties was successfully prepared by compound enzymatic method, and its physicochemical properties were analyzed in detail. The results showed that under the optimal enzymatic hydrolysis conditions, the porous starch obtained at the enzyme ratio of 1:3 (g/g), the enzyme dosage of 3%, the substrate concentration of 25%, the enzymatic hydrolysis time of 8 h, the enzymatic hydrolysis temperature of 45˚C, and the pH value of 5.5 showed higher oil absorption rate (189.56%), larger specific volume (2.13 cm³/g), suitable solubility (13.17%) and significant swelling force (3.63 g/g), which were significantly better than those of the original starch. The observation of scanning electron microscopy (SEM) further confirmed the integrity of porous starch granules, the honeycomb microporous structure on the surface, and the pore size and depth were in an ideal state, and the prepared porous starch has a wide range of potential application value.
文摘益生菌是对人体健康有益的一类活性微生物。由于菌体对外界环境高度敏感,在生产、储存和使用过程中容易出现存活率低或生物活性差等问题,显著降低了益生菌的益生效果。而包埋技术可以在产品的加工和贮藏过程中为益生菌提供保护,提高其在产品中的存活率。因此,本文就益生菌包埋技术的作用、包埋材料的选择以及淀粉在益生菌包埋技术中的应用进行综述,其中介绍了淀粉的特性和多孔淀粉在益生菌包埋技术中的优势。最后提出需要进一步研究的问题与发展建议,旨在研制出具有实际应用价值的多孔淀粉/益生菌微胶囊,为后续研究提供参考。Probiotics are a class of active microorganisms that are beneficial to human health. Due to the high sensitivity of bacteria to the external environment, it is easy to have a low survival rate or poor biological activity during production, storage and use, which significantly reduces the probiotic effect. And the embedding technology can provide protection for probiotics during the processing and storage of products, enhancing their survival rate within the products. Therefore, in this paper, the effect of probiotics embedding technology, the selection of the embedding material and starch in the application of probiotics embedding technology were reviewed, which introduces the characteristics of starch and porous starch in the advantages of probiotic embedding technology. At last, it puts forward problems that need further study and development to develop practical application value for porous starch/probiotic microcapsules and provide a reference for further research.
