Literature Cited
- ASBC Methods of Analysis, online. Hops 6A. α- and β-Acids by Spectrophotometry. Approved 1959, rev. 2008. The Society, St. Paul, MN.
- ASBC Methods of Analysis, online. Hops 6B. Conductometric Value (C.V.) Approved 1970, rev. 2008. The Society, St. Paul, MN.
- ASBC Methods of Analysis, online. Hops 14. α-Acids and β-Acids In Hops and Hop Extracts by HPLC (International Method) Approved 1990, rev. 2008. The Society, St. Paul, MN.
- European Brewery Convention. Analytica-EBC. Section 7 Hops Method 7.9 Iso-α-acids and reduced iso-α-acids in hop products by HPLC. Fachverlag Hans Carl, Nurnberg, Germany, 2004.
- International Calibration Standard Three, ICE-3. Can be obtained from ASBC Check Sample Service, 3340 Pilot Knob Rd., St. Paul, MN 55121.
- Green, C. P., and Osborne, P. J. Alpha-acid-1,2-diaminobenzene complex: A convenient standard for alpha acid analysis. J. Inst. Brew. 99:347–348, 1993.
- Maye, J. P., Mulqueen, S., Weis, S., Xu, J., and Priest, M. J. Preparation of isomerized α-acid standards for HPLC analysis of iso- α-acids, rho-iso-α-acids, tetrahydro-iso-α-acids, and hexahydro-iso-α-acids J. Am. Soc. Brew. Chem. 57:55–59, 1999.
- Thornton, H. A., Kulandal, J., Hawthorne, D. B., and Kavanagh, T. E. Preparation of a trans-isohumulone standard. J. Inst. Brew. 96:367, 1990.
- Thornton, H. A., Kulandal, J., Bond, M., Jontef, M. P., Hawthorne, D. B., and Kavanagh, T. E. Preparation of a trans-iso-α-acid and use of their dicyclohexylamine salts as a standard for iso-α-acid analysis. J. Inst. Brew. 96:473, 1993.