Results 31 to 40 of about 17,194 (297)

Anti-Coccal Activity and Composition of the Essential Oils and Methanolic Extracts Obtained from Brewing Quality Humulus lupulus L. Hop Pellets

open access: yesPharmaceuticals, 2023
This study examined the chemical composition and anti-coccal properties of essential oils and methanolic extracts of six different Humulus lupulus L. varieties from Poland: Iunga, Marynka, Sybilla, Magnum, Tradition and Chinook. The activity of an α-acid-
Bartłomiej Piasecki   +2 more
doaj   +1 more source

Present and future potential of plant-derived products to control arthropods of veterinary and medical significance [PDF]

open access: yes, 2014
The use of synthetic pesticides and repellents to target pests of veterinary and medical significance is becoming increasingly problematic. One alternative approach employs the bioactive attributes of plant-derived products (PDPs). These are particularly
Finn, Robert   +3 more
core   +1 more source

EFFECT OF RIPENESS AND DRYING OF HOPS ON THE ESSENTIAL OIL [PDF]

open access: yesJournal of the Institute of Brewing, 1958
The examination of undried Fuggles hops picked at intervals throughout the ripening period revealed that the total oil content of the samples rose throughout ripening, the production of hydrocarbons far exceeding that of the oxygenated compounds.
G. A. Howard, C. A. Slater
openaire   +1 more source

Differences in New Zealand Hop Cultivars Based on Their Unique Volatile Compounds: An Integrated Fingerprinting and Chemometrics Approach

open access: yesFoods, 2021
Hop aroma characteristics originate from hop essential oils, which have complex chemical profiles that remain poorly understood, particularly for New Zealand hops. The aim of this study was to determine volatile compounds that distinguish New Zealand hop
Victoria Purdy   +5 more
doaj   +1 more source

Cellulosic materials as biopolymers and supercritical CO2as a green process: chemistry and applications [PDF]

open access: yes, 2012
In this review, we describe the use of supercritical CO2 (scCO2) in several cellulose applications. The focus is on different technologies that either exist or are expected to emerge in the near future.
Camy, Séverine   +2 more
core   +3 more sources

Influence of growing area, plant age, and virus infection on the contents of hop secondary metabolites

open access: yesCzech Journal of Food Sciences, 2012
Hops and hop products (pellets and extracts) belong to the major raw materials employed in brewing industry. Many effects such as the growing area, hop plant age, and virus infection influence the contents of the brewing-important hop secondary ...
Lukáš JELÍNEK   +5 more
doaj   +1 more source

Headspace solid-phase microextraction combined with mass spectrometry as a powerful analytical tool for profiling the terpenoid metabolomic pattern of hop-essential oil derived from Saaz variety [PDF]

open access: yes, 2012
Hop(HumuluslupulusL.,Cannabaceaefamily)isprizedforitsessentialoilcontents,usedin beer production and, more recently, in biological and pharmacological applications. In this work,a methodinvolvingheadspace solid-phase microextractionand gas chromatography–
Câmara, José   +3 more
core   +1 more source

DIFFERENCES IN UTILISATION OF THE ESSENTIAL OIL OF HOPS DURING THE PRODUCTION OF DRY-HOPPED AND LATE-HOPPED BEERS [PDF]

open access: yesJournal of the Institute of Brewing, 1983
Late-hopped and dry-hopped beers were prepared and their lipophilic constituents extracted using Amberlite XAD-2 resin. Examination of the volatile constituents by GC-MS confirmed that most of the hop oil added towards the end of wort boiling is lost by evaporation.
J. Haley, T. L. Peppard
openaire   +1 more source

Evaluation of original historical clones of hops (Humulus lupulus L.)

open access: yesKvasný průmysl, 2020
The aim of this study was to compare yield and technological parameters of Czech historical hop clones, which were grown in our current climatic conditions. The highest yields from the selected original hop clones were found in “Úštěcký smetaňák” (1.93 t/
Vladimír Nesvadba   +3 more
doaj   +1 more source

Hop Tropicalization: Chemical Compositions of Varieties Grown under Organic and Conventional Systems in Subtropical Conditions

open access: yesHorticulturae, 2023
The interest in the production of hops in Brazil, motivated by the third position in the world ranking of beer producers and the growth of the craft brewery business, justifies the intensification of studies into its adaptation to local growing ...
Gabriel Cássia Fortuna   +8 more
doaj   +1 more source

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