SPE-HPLC Method for Acrylamide Detection in Potato Chips

On April 2002, researchers from Swedish National FDA and University of Stockholm first reported that acrylamide have been detected on many oil-fried and baked starchy foods, such as French fries, potato chips and so on, and the contents of acrylamide exceeded more than 500 times of the maximum permitted level of acrylamide in drinking water. The similar results have been reported by researchers from Norway, United Kingdom, Swiss and USA. In 2010 a joint Food and Agriculture Organization and World Health Organization expert committee determined there was evidence that acrylamide could cause cancer in laboratory animals. Although there is no sufficient evidence that acrylamide intake through food has a significant relationship with the occurrence of any type of cancer in human, the investigation results on professionals who contact acrylamide frequently and on people who contact acrylamide occasionally showed that acrylamide has neurotoxicity, and agreed that we should reduce our exposure.

A Mix-model HPLC Stationary Phase C18/SAX Improve Separation

C18 HPLC columns are used to analyze individual parts of chemical mixtures. Ion-exchange chromatography (SAX) is a process that allows the separation of ions and polar molecules based on their charge. We have designed a mix-mode HPLC column named as Optimix C18/SAX (2) made from 5 μm high purity spherical silica particles. A special silane with octadecyl chain embedded quaternary amine group is bonded to the silica particles.

clindamycin hydrochloride

clindamycin-hydrochloride

Condition
Column: Innoval C18, 4.6x250 mm, 5 um
Detector: UV = 210 nm,
column temperature: 30 ºC,
Flow rate: 1 mL/min,
Injection volume: 20 uL
Mobile Phase: phosphate buffer: acetonitrile =55:45 (Phosphate buffer: 6.8 g/L solution of potassium dihydrogen phosphate adjust pH to 7.5 with a 250 g/L solution of Sodium hydroxide)
About Innoval Columns

Innoval column is packed with high purity silica particles that is prepared by the ultra pure aggregation of silica sols. This class of columns from Bonna-Agela shows excellent reproducibility and high efficiency. A variety of function groups is bonded to the packing for broad applications.

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Clindamycin hydrochloride

European Pharmacopoeia 7.0: 1716-1717
Requirements: the retention time of clindamycin hydrochloride is around 10 min.
clindamycin-hydrochloride
Profile of system suitability test (Innoval C18)
XBP C18, XBP C18(2), XBP C18(L), Promosil C18 and Odyssil C18 give a good result as well, click here to find the detail
Rt of clindamycin hydrochloride (min) Plate counts
Venusil XBP C18 11.542 13488
Venusil XBP C18(2) 12.551 13588
Venusil XBP C18(L) 9.149 16535
Promosil C18 9.582 14965
Odyssil C18 11.486 9978
Innoval C18 8.148 12435

Bonna-Agela, a chromatography specialty company, has developed many HPLC methods for Pharmacopoeia applications. Many of these methods using Bonna-Agela columns have been acknowledged by USP-PQRI column database for better solutions of HPLC applications. Some of recent publications using Bonna-Agela's HPLC colums are shown here below:

An oligosorbent-based aptamer affinity column for selective extraction of aflatoxin B2 prior to HPLC with fluorometric detection H Liu, Y Luan, A Lu, B Li, M Yang, JH Wang - Microchimica Acta, 2018 - Springer … HPLC separation was performed on a Venusil MP C18 column (250 × 4.6 mm id, particle size 5 μm, Bonna–Agela China). The optimized conditions of HPLC-FLD were as follows: 40 °C for column temeprature, 0.8 mL min −1 flow rate, 40 μL injection volume, excitation …

HPLC electrochemical detection and quantification of monoamines and their metabolites in rat brain tissue samples FP Viljoen, JL Du Preez, JC Wessels… - Die Pharmazie-An …, 2018 - ingentaconnect.com … Africa). 4.1.2. Materials The analytical HPLC column used was a Venusil ASB C8 (purchased from Bonna- Agela Technologies, USA), 4.6 x 250 mm, a particle size of 5 μm, pore size of 150 Å and a surface area of 200 m2/g. 4.1 …