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Advisor(s)
Abstract(s)
Humulus lupulus L. is a species in the Cannabaceae family. Hop, as it is commonly
known, is a perennial, dioecious and normally diploid (2n = 20) herbaceous plant [1]. It is
in beer production that hops have their greatest economic value at the international level.
Due to the production of compounds with bactericidal action, in particular against Gramnegative
bacteria, the hops came to solve problems related to the conservation of beer
[2]. In addition Hops contain compounds that confer sedative, diuretic and antiarthritic
properties [3]. In the ethnobotanical use, the dried flowers were used in pillows called "hop
pads", to combat insomnia [4]. The use of dried and green hop inflorescences for diuretic
uses and disorders of the digestive tract, were verified in the Montesinho park area [5]. In
China, alcoholic extracts of hops were used to treat leprosy, tuberculosis and dysentery
[2]. Its use in infusions as a tonic, since the middle Ages where it considered a medicinal
herb [6]. The results obtained show a certain similarity in the monoterpene component,
with β-myrcene as the major compound (more than 64% in cultivar and spontaneous
samples) and notorious differences in the sesquiterpene component, evident in cases
of α-humulene (12% in cultivars, 0.2% and in spontaneous) and trans-β-farnesene (not
detected in cultivars, 9% in spontaneous). Also important is the richness of the sesquiterpene
component in spontaneous clone, in particular in the oxygenated compounds.
This profile, of both cultivar and spontaneous, shows potential for antiseptic effects in the
digestive tract, especially when these are associated with bacteria such as Helicobacter
pylori [7], which will be in agreement with ethnobotanical uses of Hop. Since there is spontaneous
hops in a large part of Portugal, the collection and analysis of the aromas of these
hops may lead to the development of new and more fragrances, with interest in different
areas, like beer production or cosmetics. The volatile components extracted from spontaneous
hops collected in the Bragança area were analyzed and compared with those of
commercial varieties.
Description
Keywords
Humulus lupulus L. Hop Medicinal Monoterpene Sesquiterpene Helicobacter pylori
Citation
Goes, Hugo; Sousa, Maria João; Pedro, Luís (2017). Humulus lupulus L. analysis and comparison of volatile of spontaneous and commercial varieties: phytotherapeutic potentialities. In Carvalho, Ana Maria; Pardo de Santayana, Manuel; Bussmann, Rainer (Coord.) - Living in a global world: ethnobotany, local knowledge and sustainability. 58th Annual Meeting of the Society for Economic Botany: book of abstracts. . Bragança: Instituto Politécnico, Centro de Investigação de Montanha, Society for Economic Botany. ISBN 978-972-745-224-8
Publisher
Instituto Politécnico de Bragança