The present opinion deals with the re-evaluation of polyvinylpyrrolidone (E 1201, PVP) and polyvinylpolypyrrolidone (E 1202, PVPP) when used as food additives. One request for extension of use of PVP (E 1201) in foods for special medical purposes was also considered in this assessment. The Panel followed the conceptual framework under Commission Regulation (EU) No 257/2010 and considered that: the exposure assessment was based on the reported use and use levels (one food category out of the two food categories in which PVP and PVPP are authorised); the 95th percentile of exposure to PVP and PVPP of maximally 23.7 and 25 mg/kg body weight (bw) per day in children, respectively, was overestimated, because it was assumed that 100% of the food supplements consumed contained PVP or PVPP at the maximum reported use levels; the extension of use of PVP (E 1201) to foods for special medical purposes (FC 13.2) would result in an exposure of PVP of 4.3 mg/kg bw per day for children; the absorption of PVP and PVPP is very low; sufficient toxicity data were available for PVP; there is no concern with respect to the genotoxicity of PVP and PVPP; no carcinogenic effects were reported in carcinogenicity studies in rats at a dose of 2,500 mg PVP/kg bw per day, the highest dose tested; there is no need for chronic toxicity/carcinogenicity data for PVPP for the safety assessment of PVPP given the chemical similarity between PVP and PVPP, and the lack of adverse effects in the available repeated dose toxicity studies. Therefore, the Panel concluded that there is no need for numerical acceptable daily intakes (ADIs) for PVP and PVPP, and that there is no safety concern for the reported uses and use levels of PVP and PVPP as food additives. The Panel further concluded that the proposed extension of use is not expected to be of safety concern at the proposed maximum permitted level (MPL) and recommended consumption level.
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http://dx.doi.org/10.2903/j.efsa.2020.6215 | DOI Listing |
Int J Biol Macromol
October 2024
Department of Food science and nutrition, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia.
Establishing a reliable and secure water supply is still a significant challenge in many areas that need more infrastructure. Eliminating harmful bacteria from water systems is a critical obstacle to managing the spread of waterborne illnesses and protecting public health. Thus, this work focuses on enhancing the efficiency of using marine waste extract, namely seaweed, by its integrating its extract into aerogels based on Hydroxyethyl cellulose (HEC) and polyvinylpolypyrrolidone (PVP).
View Article and Find Full Text PDFmedRxiv
May 2024
Department of Ecology and Evolution, University of Chicago, Chicago, IL 60637.
Background: Studies have reported that repeated annual vaccination may influence the effectiveness of the influenza vaccination in the current season. The mechanisms underlying these differences are unclear but might include "focusing" of the adaptive immune response to older strains.
Methods: We established a 5-year randomized placebo-controlled trial of repeated influenza vaccination (Flublok, Sanofi Pasteur) in adults 18-45 years of age.
Molecules
January 2023
Guangdong-Hong Kong Joint Laboratory for New Textile Materials, Guangdong Functional Fiber and Textile Engineering Technology Research Center, School of Textile Materials and Engineering, Wuyi University, Jiangmen 529020, China.
In recent years, metal-organic framework (MOF)-based nanofibrous membranes (NFMs) have received extensive attention in the application of water treatment. Hence, it is of great significance to realize a simple and efficient preparation strategy of MOF-based porous NFMs. Herein, we developed a direct in situ formation of MOF/polymer NFMs using an electrospinning method.
View Article and Find Full Text PDFMicromachines (Basel)
November 2022
Han Chung RF, Co., Ltd., Incheon 21678, Republic of Korea.
In this study, iron oxide nanoparticles (FeO NPs) were synthesized by using Fe solution recycled from NdFeB permanent magnet scrap. Furthermore, the effect of polyvinylpolypyrrolidone (PVP) as a surfactant on the characteristics of the FeO NPs was investigated. Firstly, Fe solution was prepared by using 10% HSO solution and NaSO salt.
View Article and Find Full Text PDFJ Oleo Sci
March 2021
Chemistry Department, Faculty of Science, King Abdulaziz University.
The fluoroquinolone antibiotic drug namely ciprofloxacin hydrochloride (CFH) is widely prescribed for the treatment of different bacterial infections. The interaction of CFH with a synthetic polymer, polyvinyl pyrrolidone (PVP), and biopolymer, bovine serum albumin (BSA) was studied by UVvisible and fluorescence spectroscopic methods at different temperatures. The binding constant (K ) for the CFH-PVP complex was determined from the Benesi-Hildebrand plot.
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