Sensitive and fast detection of ibuprofen( Ibu) in an aquatic environment often requires costly, time-consuming and sophisticated techniques. To tackle those limitations,a novel android smartphone application was deve...Sensitive and fast detection of ibuprofen( Ibu) in an aquatic environment often requires costly, time-consuming and sophisticated techniques. To tackle those limitations,a novel android smartphone application was developed based on a colorimetric analysis method using unmodified gold nanoparticles( AuNPs)aptamer probes to quantitatively detect Ibu. Under optimal conditions,it could detect Ibu as low as 0. 25 ng/mL with high selectivity. The determination of Ibu in real water samples was also carried out to confirm the practicability of the application.展开更多
International Bitterness Units(IBUs)were measured with a spectrophotometer throughout the brewing process for a wide variety of beer styles.Most of the data were collected at our 50BBL Scripps Ranch facility,although ...International Bitterness Units(IBUs)were measured with a spectrophotometer throughout the brewing process for a wide variety of beer styles.Most of the data were collected at our 50BBL Scripps Ranch facility,although some data were also gathered from our 5 BBL R&D brewery and 150 BBL production facility.It was determined that mash hops add a small amount of IBUs to wort with an average utilization of 9.1%.As expected,60 min hop additions added substantially more IBUs;the average hop utilization was 44.0%.Whirlpool hops also contributed high IBUs w让h an average utilization of 29.9%.In addition,hot-side wet hopping had 8.0%utilization.A large amount of IBUs are lost during the first 2 days of fermentation.Losses were also observed during filtration.It was discovered that high amounts of dry hopping resulted in an increase of IBUs.However,the average overall IBU loss in the cellar was 33.7%.展开更多
基金National Natural Science Foundation of China(No.21377023)
文摘Sensitive and fast detection of ibuprofen( Ibu) in an aquatic environment often requires costly, time-consuming and sophisticated techniques. To tackle those limitations,a novel android smartphone application was developed based on a colorimetric analysis method using unmodified gold nanoparticles( AuNPs)aptamer probes to quantitatively detect Ibu. Under optimal conditions,it could detect Ibu as low as 0. 25 ng/mL with high selectivity. The determination of Ibu in real water samples was also carried out to confirm the practicability of the application.
文摘International Bitterness Units(IBUs)were measured with a spectrophotometer throughout the brewing process for a wide variety of beer styles.Most of the data were collected at our 50BBL Scripps Ranch facility,although some data were also gathered from our 5 BBL R&D brewery and 150 BBL production facility.It was determined that mash hops add a small amount of IBUs to wort with an average utilization of 9.1%.As expected,60 min hop additions added substantially more IBUs;the average hop utilization was 44.0%.Whirlpool hops also contributed high IBUs w让h an average utilization of 29.9%.In addition,hot-side wet hopping had 8.0%utilization.A large amount of IBUs are lost during the first 2 days of fermentation.Losses were also observed during filtration.It was discovered that high amounts of dry hopping resulted in an increase of IBUs.However,the average overall IBU loss in the cellar was 33.7%.