Index Catalog // ScholarsArchive@OSU

The bitterness intensity of oxidized hop acids : humulinones and hulupones

Creator:: Algazzali, Victor Alexander
Abstract:: The goal of this research was to investigate the bitterness intensity of known hop acid oxidation products, humulinones and hulupones. This was carried out by first creating suitable extracts of humulinones and hulupones of high purity for sensory testing. Using previously established oxidation methods and the addition of preparative liquid...
Resource Type:: Masters Thesis
Full Text:: contain up to 3% hulupones by weight (33). One year later in 1961, Stevens et al measured hop cones to

Aroma-active compounds in 'Centennial', 'Citra' and 'Nelson Sauvin' hop varieties and their aroma contribution to dry-hopped beer

Creator:: Feng, Shi
Abstract:: The objectives of this study were to 1) measure and compare the compositional differences of essential oil among three hop cultivars ('Centennial’, 'Citra' and 'Nelson Sauvin'), 2) identify the odor-active aroma compounds in three varieties of hops and 3) investigate the behavior of hop-derived aroma compounds in beers prepared by...
Resource Type:: Masters Thesis
Full Text:: Zatec hop oil (Stevens 1967). Meanwhile, from the same study, farnesene was isolated and, undecan-2

The influence of polyphenols and humulinones on bitterness in dry-hopped beer

Creator:: Parkin, Ellen Jane
Abstract:: This research sought to determine the origin of bitterness as a result of dry-hopping. An unhopped ale was dry-hopped and examined in the controlled dry-hop experiment and commercial beers were examined for chemical changes from dry-hopping in the commercially dry-hopped beer survey. This thesis work suggested specific bitter hop components...
Resource Type:: Masters Thesis
Full Text:: , although research is inconclusive on the bitterness from humulinones and hulupones. Stevens and Wright

Bitterness modifying properties of hop polyphenols

Creator:: McLaughlin, Ian R.
Abstract:: This study examined whether polyphenols contribute a harsh bitterness to beer, and how polyphenols may otherwise modify beer bitterness in the presence of iso-a-acids. The experimental portions of this project were divided into effectively two segments. The first section of the study encompassed groundwork polyphenol extraction development, and the examination...
Resource Type:: Masters Thesis

The potential role of aliphatic gamma- and delta-lactones in beer fruit aroma

Creator:: Hotchko, Rachel Ann
Abstract:: This work set out to examine the potential contribution of five aliphatic lactones, γ-nonalactone, γ-decalactone, γ-dodecalactone, δ-decalactone and δ-dodecalactone to stone fruit aroma in beer. This work consists of three related studies; lactone olfaction thresholds, additive/synergistic aroma effects and a gas-chromatography-mass-spectrophometry method of analysis. First was the determination of these...
Resource Type:: Masters Thesis

Harvest maturity of Cascade and Willamette hops

Creator:: Sharp, Daniel C.
Abstract:: Hops (Humulus lupulus L.) are primarily used to provide specific characteristics to beer, such as bitterness, aroma, flavor, and microbial stability. The chemical composition of hops, relative to how they are used during the brewing process, dictates the expression of these characteristics. Of the raw ingredients that go into making...
Resource Type:: Masters Thesis
Full Text:: ............................................................................................................ 42 Dedicated to Cameron J. Sharp (1987-2006) What’s up man? 1

The Role of Alcohol Content on Sensory Aroma Detection Thresholds in Beer

Creator:: Peltz, Meghan Lynne
Abstract:: This work set out to examine whether ethanol content can influence the human detection of volatile hop compounds in beer. Advances in chromatography have identified hundreds of chemical compounds in the essential oil of hops but only a fraction are directly associated with "hoppy" aroma. To screen compounds, sensory detection...
Resource Type:: Masters Thesis
Full Text:: ). Stevens found that the variability of each subject tested 60 times was comparable to the magnitude

A study of factors affecting the extraction of flavor when dry hopping beer

Creator:: Wolfe, Peter Harold
Abstract:: This work set out to examine the methodologies of dry hopping, compare different hop materials, and look at the extraction behavior of different types of hop compounds. This work consists of two discrete studies, where the first study informed the design of the second. The first study measured the concentrations...
Resource Type:: Masters Thesis

Factors that Influence the Sensory Characteristics of Dry-hopped Beer

Creator:: Vollmer, Daniel M.
Abstract:: When hops are added to beer, varying degrees of hoppy aroma persist in the finished beer as a result of a number of factors. Dry-hopping is a technique whereby hops are added to beer post-fermentation to leverage the maximum aroma potential of the hop essential oils while minimizing bitterness contribution...
Resource Type:: Dissertation

Hop bitter acid isomerization and degradation kinetics in a model wort-boiling system

Creator:: Malowicki, Mark G.
Resource Type:: Masters Thesis
Full Text:: of Food Science and Technology Dean of 'the Gr{J.~ School I understand that my thesis will become

ScholarsArchive@OSU

The bitterness intensity of oxidized hop acids : humulinones and hulupones

Aroma-active compounds in 'Centennial', 'Citra' and 'Nelson Sauvin' hop varieties and their aroma contribution to dry-hopped beer

The influence of polyphenols and humulinones on bitterness in dry-hopped beer

Bitterness modifying properties of hop polyphenols

The potential role of aliphatic gamma- and delta-lactones in beer fruit aroma

Harvest maturity of Cascade and Willamette hops

The Role of Alcohol Content on Sensory Aroma Detection Thresholds in Beer

A study of factors affecting the extraction of flavor when dry hopping beer

Factors that Influence the Sensory Characteristics of Dry-hopped Beer

Hop bitter acid isomerization and degradation kinetics in a model wort-boiling system

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search