Search

Yingpan, Xinjiang, was an important site on the Silk Road of China. A large number of precious objects with exquisite patterns have been excavated from this site, and they provide valuable physical evidence for the study of the cultural exchanges between China and the rest of the world. The conservation methods applied to a pair of cloud pattern-painted boots excavated in Yingpan, Xinjiang, are introduced in this paper, and the various factors influencing the repair process are explained. The results show that an oil-in-water emulsifier with contaminant removal and antibacterial functions effectively softened the hardened and deformed ancient leather. The use of near infrared spectroscopy (NIR) to evaluate the dosage of the softening agent can prevent excessive use of softening agents on historical leathers. A silk crepeline method was used to influence the physical reinforcement of the boots without affecting their appearance. It improved the fiber strength of the ancient textiles. This article is a good reference for conservators seeking to repair ancient leather products with textiles. [ABSTRACT FROM AUTHOR]

Keywords: Pomelo peel; extraction; cellulose nanofibrils; lemon juice hydrolysis; ; ; ; ; EN Pomelo peel extraction cellulose nanofibrils lemon juice hydrolysis ZH 8415 8428 14 11/21/22 20221220 NES 221220 Introduction The large-scale production of the agricultural products in the recent decades has brought significant economic benefits to the humanity; however, the negative impact of the agricultural residues on the environment cannot be ignored (Ullah, Kumar Sharma, and Dhingra et al. [45]). It was observed that with the gradual processing stages, the impurities such as hemicellulose and lignin were removed, and the relatively pure cellulose material with the chemical structure of natural cellulose was obtained. However, in this study, these peaks are observed to be separated after ball milling, which shows that the high-energy ball milling is able to effectively peel off hemicellulose and lignin around cellulose to further purify the extracted cellulose. This is owing to the effective removal of ash, grease, and non-cellulose entities on the surface of cellulose during the extraction process, thus, exposing the cellulose material inside the raw sample. [Extracted from the article]

The characterization of ancient silk provides significant historical information and contribute to the identification of the origin of the material. At present, there are many ways to characterize silk. However, on-site identification of ancient silk remains a crucial challenge. In this study, a paper chromatography system consisting of a colloidal gold immunochromatographic strip (GICS) and a time-resolved fluorescence immunochromatographic strip (TICS) is proposed to meet this challenge. On the basis of the original paper chromatography technique, a monoclonal antibody against silk fibroin (SF) was prepared and applied in this new paper chromatography system. Both the GICS and the TICS showed good sensitivity, specificity and reliability, with the limit of detection for silk fibroin being 30 μg/mL and 49.20 ng/mL, respectively. Moreover, there was no cross reaction with possible interferents. Furthermore, the GICS had acceptable thermal stability. The recovery of the TICS assay was in the range from 98.12% to 103%, and the variation coefficient was from 5.34% to 6.93%. This work significantly improves access to scientific information at archaeological sites, providing new scientific evidence for exploring the origin and transmission roadmap of ancient silk. [ABSTRACT FROM AUTHOR]