雞蛋可以說是中國人日常飲食中存在感最強的一種食物,每天早上吃一個雞蛋,已經成為大多數人的早餐習慣了。在營養學界,雞蛋素有全營養食品的美譽。
The magic material -- egg shell
一旦蛋殼開裂,我們就會毫不猶豫地摒棄它。但其實蛋殼卻有很多用處,讓我們一起來看看吧↓↓
用雞蛋殼碾成末外敷,有治療創傷和消炎的功效。(ps:受傷了還是得及時去醫院治療哦~)
本文以母雞蛋殼(ESP)中的天然膠原蛋白原位還原製備納米銀顆粒(AgNPs),並採用掃描電鏡、傅立葉紅外光譜、X-射線衍射、熱重和抗菌實驗表徵含有AgNPs的納米複合蛋殼粉(NCESP)。因此,以家禽廢棄物ESP為原料,製備的NCESP可用作廉價家用抗菌清洗劑和抗菌混合納米複合材料聚合物基質的抗菌填料。以天然膠原蛋白原位還原製備納米銀複合蛋殼粉
(Nanocomposite Egg Shell Powder with in situ Generated Silver Nanoparticles Using Inherent Collagen as Reducing Agent)
該論文近期發表在Journal of Bioresources and Bioproducts 期刊上。
Silver nanoparticles (AgNPs) were in situ generated in poultry hen egg shell powder (ESP) by one step thermal assisted method using the inherently present collagen as a reducing agent. The nanocomposite egg shell powder (NCESP) with in situ generated silver nanoparticles was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA) and antibacterial tests. The prepared NCESP had the spherical AgNPs in the size range of 50–120 nm with most of them from 81 nm to 90 nm. Further, the average size of the AgNPs generated in the NCESP was 88 nm. The X-ray analysis indicated the presence of both AgNPs and AgO nanoparticles (AgONPs) in the NCESP. The possible mechanism of generation of AgNPs and AgONPs in the NCESP was also proposed. The thermal stability of the NCESP was found to be higher than that of the ESP. The NCESP exhibited excellent antibacterial activity against both the Gram negative and positive bacteria. The NCESP made from poultry waste ESP can be utilized as a low-cost antibacterial cleaning powder for house ware and also as low-cost antibacterial filler in polymer matrices to make antibacterial hybrid nanocomposites.
Keywords: nanocomposites ;in situ generation ;silver nanoparticles ;thermal stability ;antibacterial activity
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