Extraction and Encapsulation of Phenolic Compounds of Tunisian Rosemary (Rosmarinus officinalis L.) Extracts in Silk Fibroin Nanoparticles

被引:18
|
作者
Hcini, Kheiria [1 ,2 ]
Lozano-Perez, Antonio A. [3 ]
Luis Cenis, Jose [3 ]
Quilez, Maria [4 ,5 ]
Jose Jordan, Maria [4 ]
机构
[1] Univ Tunis El Manar, Fac Sci Tunis, Dept Life Sci, Biodivers Biotechnol & Climate Change Lab LR11ES0, Tunis 2092, Tunisia
[2] Univ Gafsa, Fac Sci Gafsa, Dept Life Sci, Univ Campus Sidi Ahmed Zarroug, Gafsa 2112, Tunisia
[3] Inst Murciano Invest & Desarrollo Agr & Medioambi, Dept Biotecnol Genom & Mejora Vegetal, Murcia 30150, Spain
[4] Inst Murciano Invest Biosanit IMIB Arrixaca, Murcia 30120, Spain
[5] Inst Murciano Invest & Desarrollo Agr & Medioambi, Dept Desarrollo Rural Enol & Agr Sostenible, Murcia 30150, Spain
来源
PLANTS-BASEL | 2021年 / 10卷 / 11期
关键词
Rosmarinus officinalis L.extracts; post-distilled residues; HPLC; radical scavenging activity; DPPH; silk fibroin nanoparticles (SFNs); nanoencapsulation; OLEA-EUROPAEA L; CARNOSIC ACID; ANTIOXIDANT ACTIVITY; STORAGE STABILITY; ESSENTIAL OIL; MICROENCAPSULATION; POLYPHENOLS; ADSORPTION; QUALITY; AREA;
D O I
10.3390/plants10112312
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Rosemary (Rosmarinus officinalis L.) is known to be an effective potential source of natural antioxidants which confer benefits to human health. Their bioactive properties are mainly due to phenolic compounds but these molecules are highly vulnerable to oxidants, light, heat, pH, water and enzymatic activities. Therefore, the stability and shelf life of phenolic compounds should be increased by being protected from chemical and physical damage by means of encapsulation prior to application. Encapsulation is becoming increasingly important in the pharmaceutical, food, cosmetics, textile, personal care, chemical, biotechnology, and medicinal industries due to its potential for stabilization and delivery of delicate and precious bioactive compounds. The aim of the present work was to describe the polyphenolic profile of Tunisian Rosemary, collected from two different bioclimatic areas, and further loading in silk fibroin nanoparticles. The loaded nanoparticles were characterized in terms of morphology, size, polydispersity, Z-potential, secondary structure of the protein, encapsulation efficiency, loading content, and antioxidant activity. On one hand, HPLC analysis revealed the presence of 18 polyphenolic compounds of whichcarnosic acid and carnosol were found to be the most abundant compounds (46.3 to 76.4 and 22.4 to 43.5 mg of compound per gram of dry plant weight (mg/g DPW) respectively), Total phenolic content (TPC) ranged from 85.8 to 137.3 mg of gallic acid equivalent (GAE)/g DPW in post-distilled rosemary extracts andantioxidant activity reached the values of 5.9 to 8.3 mu mol of ascorbic acid equivalent (AAE)/g DPW). On the other hand loaded nanoparticles were almost spherical and presented nanometric size and negative Z-potential. Although the encapsulation efficiency in silk fibroin nanoparticles and the drug loading content were low in the conditions of the assay, the encapsulated polyphenols retained near 85% of the radical scavenging activity against DPPH & BULL; after 24 h. of incubation at 37 & DEG;C. The results showed that post-distilled rosemary residues had an effective potential as natural antioxidants due to their significant antioxidant activity and seemed to be useful in both pharmaceutical and food industries with beneficial properties that might confer benefits to human health and these silk fibroin nanoparticles loaded with rosemary extracts are thus a promising combination for several applications in food technology or nanomedicine.
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页数:14
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