Volatile Constituents of Hyptis Suaveolens (L.) Poit. From Brazilian Cerrado

Campos, Irani F.P; Ferreira, Heleno Dias; Portes, Tomás Aquino; Seraphin, José Carlos; Paula, José Realino de; Silva, Juliana Gomes da; Azevedo, Neucírio Ricardo de; Santos, Suzana C.; Ferri, Pedro Henrique

doi:10.17660/actahortic.2002.569.31

Acta Hortic.

2002

DOI: 10.17660/actahortic.2002.569.31

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Volatile Constituents of Hyptis Suaveolens (L.) Poit. From Brazilian Cerrado

Irani F.P Campos¹,

Heleno Dias Ferreira²,

Tomás Aquino Portes³

et al.

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“…In addition, it has been shown that the essential oil of pignut has antibacterial activities that inhibit development of certain fungi and bacteria (Okonogi et al 2005). Its main constituents are sabinene, 1,8-cineole, spathulenol, (E)-caryophyllene and biclyclogermacrene (Campos et al 2002). Because pignut is considered a weed, it is easy to obtain in large quantities and therefore the cost of extracting its essential oil is low (Lorenzon et al 2003).…”

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The effect of essential oils of sweet fennel and pignut on mortality and learning in africanized honeybees (Apis mellifera L.) (Hymenoptera: Apidae)

Abramson¹,

Wanderley²,

Wanderley³

et al. 2007

Neotrop. entomol.

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Efeito de Óleos Essenciais de Erva-Doce e Alfazema sobre a Mortalidade e Aprendizagem de AbelhasAfricanizadas (Apis mellifera L.) (Hymenoptera: Apidae) What is not known is whether these oils also infl uence honeybee behavior. Experiments using both harnessed and free-fl ying foragers at concentrations used to control aphids showed that bees readily associated the odors with a reward, discriminated between them, and were not repelled. Honeybees, however, would not consume the oils when mixed with sucrose to create an unconditioned stimulus. An experiment in which harnessed bees consumed various concentrations showed that concentrations greater than 50% were detrimental. The experiments reported here provide further evidence supporting the use of conditioning techniques to evaluate the use of essential oils on honey bee behavior.KEY WORDS: Repellent, free-fl ying, behaviorHoneybees naturally visit plants to gather nectar. Among these plants are the sweet fennel, known in Brazil as "ervadoce" (Foeniculum vulgare Mill) and the pignut, known in Brazil as "alfazema" (Hyptis suaveolens (L.) Poit).Sweet fennel is recognized internationally for its medicinal value in treating some respiratory diseases (Torres 2004). It is also used in Brazil to season typical foods in the northeast and is used to protect fruits against post-harvest pathogenic fungi. Sweet fennel is also used by the cosmetic industry because of its soft and pleasant smell. It can be found in a variety of products ranging from shampoos, to soaps, deodorants, and lotions. It has also become popular to use sweet fennel in perfumed candles. As a result of heavy commercial use, sweet fennel is becoming an important cash crop in the northeast of Brazil.The main constituents of sweet fennel essential oils are (E)-anethole (72.27% -74.18%), fenchone (11.32% -16.35%) and methyl chavicol (3.78% -5.29%) (Mimica-Dokič et al. 2003). The method of distillation used by these authors signifi cantly affected the essential oil yield and quantitative composition, although the antifungal activity of the oils was only slightly altered.

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The effect of essential oils of sweet fennel and pignut on mortality and learning in africanized honeybees (Apis mellifera L.) (Hymenoptera: Apidae)

Abramson¹,

Wanderley²,

Wanderley³

et al. 2007

Neotrop. entomol.

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Volatile Constituents of Hyptis Suaveolens (L.) Poit. From Brazilian Cerrado

Cited by 1 publication

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The effect of essential oils of sweet fennel and pignut on mortality and learning in africanized honeybees (Apis mellifera L.) (Hymenoptera: Apidae)

The effect of essential oils of sweet fennel and pignut on mortality and learning in africanized honeybees (Apis mellifera L.) (Hymenoptera: Apidae)

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