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Papoutsis, Konstantinos,Pristijono, Penta,Golding, John Brett,Stathopoulos, Costas Evangelou,Scarlett, Christopher James,Bowyer, Michael Christian,Vuong, Quan Van 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.4
The effects of different solvents on the recovery of (i) extractable solids (ES), (ii) total phenolic compounds (TPC), (iii) total flavonoid content (TFC), (iv) vitamin C, and (v) antioxidant activity from lemon pomace waste were investigated. The results revealed that solvents significantly affected the recovery of ES, TPC, TFC, and antioxidant properties. Absolute methanol and 50% acetone resulted in the highest extraction yields of TPC, whereas absolute methanol resulted in the highest extraction of TFC, and water had the highest recovery of vitamin C. 50% ethanol, and 50% acetone had higher extraction yields for TPC, and TFC, as well as higher antioxidant activity compared with their absolute solvents and water. TPC and TFC were shown to be the major components contributing to the antioxidant activity of lemon pomace.
Konstantinos Papoutsis,Penta Pristijono,John Brett Golding,Costas Evangelou Stathopoulos,Christopher James Scarlett,Michael Christian Bowyer,Quan Van Vuong 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.4
The effects of different solvents on the recovery of (i) extractable solids (ES), (ii) totalphenolic compounds (TPC), (iii) total flavonoid content (TFC), (iv) vitamin C, and (v) antioxidant activityfrom lemon pomace waste were investigated. The results revealed that solvents significantly affectedthe recovery of ES, TPC, TFC, and antioxidant properties. Absolute methanol and 50% acetone resultedin the highest extraction yields of TPC, whereas absolute methanol resulted in the highest extraction ofTFC, and water had the highest recovery of vitamin C. 50% ethanol, and 50% acetone had higherextraction yields for TPC, and TFC, as well as higher antioxidant activity compared with their absolutesolvents and water. TPC and TFC were shown to be the major components contributing to theantioxidant activity of lemon pomace.
Fabio Savoldi,Aggeliki Papoutsi,Simona Dianiskova,Domenico Dalessandri,Stefano Bonetti,James K. H. Tsoi,Jukka P. Matinlinna,Corrado Paganelli 대한치과교정학회 2018 대한치과교정학회지 Vol.48 No.4
Resistance to sliding (RS) between the bracket, wire, and ligature has been largely debated in orthodontics. Despite the extensive number of published studies, the lack of discussion of the methods used has led to little understanding of this phenomenon. The aim of this study was to discuss variables affecting RS in orthodontics and to suggest an operative protocol. The search included PubMed©, Medline©, and the Cochrane Library©. References of full-text articles were manually analyzed. English-language articles published between January 2007 and January 2017 that performed an in vitro analysis of RS between the bracket, wire, and ligature were included. Study methods were analyzed based on the study design, description of materials, and experimental setup, and a protocol to standardize the testing methods was proposed. From 404 articles identified from the database search and 242 records selected from published references, 101 were eligible for the qualitative analysis, and six for the quantitative synthesis. One or more experimental parameters were incompatible and a meta-analysis was not performed. Major factors regarding the study design, materials, and experimental setup were not clearly described by most studies. The normal force, that is the force perpendicular to the sliding of the wire and one of the most relevant variable in RS, was not considered by most studies. Different variables were introduced, often acting as confounding factors. A protocol was suggested to standardize testing procedures and enhance the understanding of in vitro findings.[Korean J Orthod 2018;48(4):268-280]