• Title/Summary/Keyword: Honeybees

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Propolis Inhibits UVA-Induced Apoptosis of Human Keratinocyte HaCaT Cells by Scavenging ROS

  • Kim, Han Bit;Yoo, Byung Sun
    • Toxicological Research
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    • v.32 no.4
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    • pp.345-351
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    • 2016
  • Propolis is a resinous material collected by honeybees from several plant sources. This research aimed at showing its protective effect against UVA-induced apoptosis of human keratinocyte HaCaT cells. Using Hoechst staining, it was demonstrated that propolis (5 and $10{\mu}g/mL$) significantly inhibited the apoptosis of HaCaT cells induced by UVA-irradiation. Propolis also showed the protective effect against loss of mitochondrial membrane potential induced by UVA-irradiaiton in HaCaT cells. Propolis also inhibited the expression of activated caspase-3 induced by UVA-irradiation. To investigate the role of ROS in UVA-induced apoptosis and protection by propolis, the generation of ROS was determined in cells. The results showed that the generation of ROS was markedly reduced in cells pretreated with propolis. Consequently, propolis protected human keratinocyte HaCaT cells against UVA-induced apoptosis, which might be related to the reduction of ROS generation by UVA-irradiation.

The Pollination of Honeybee on Peach Blossom Planted in Vinyl House and its Valuation of the Fruits after Harvest

  • Kim, Young-Soo;Cho, Jae-Wook;Lee, Man-Young;Lee, Myeong-Lyeol
    • Proceedings of the Korean Society of Sericultural Science Conference
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    • 2003.04a
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    • pp.70-70
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    • 2003
  • The pollination activity of honeybees(Apis melltfera L.) were investigated at the green-house peach blossom of Cheongdo Peach Experiment Station in Korea during the early spring from 2/28/02 - 3/4/02. Furthermore, the differences of ripened fruits, such as bearing ratio, fruit weight, diameter, hardness, sweetness, and acidity were measured to compare the effects with honeybee, artificial, honeybee+artificial, and none pollination. (omitted)

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Prevalence of Antibiotics in Nectar and Honey in South Tamilnadu, India

  • Solomon, RD. Jebakumar;Santhi, V. Satheeja;Jayaraj, Vimalan
    • Animal cells and systems
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    • v.10 no.3
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    • pp.163-167
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    • 2006
  • Reverse-Phase High-performance Liquid Chromatography (RP-HPLC) based technique is one of the most sensitive techniques to detect the antibiotics present in honey. In the southern part of Tamilnadu, India, majority of the farmlands are occupied by plantations such as coconut, banana and rubber. A variety of antimicrobial compounds and antibiotics, which have been reported in pollen, nectar and other floral parts of the plant, gets accumulated in honey through honeybees (Apis mellifera). We have collected the nectar samples from banana (Musa paridasiaca) and rubber (Ficus elastica) flowers and the honey from honey hives of banana and rubber cultivated areas. The extracted nectar and honey samples are subjected to RP-HPLC analysis with authentic antibiotic standards. Nectar and honey samples showed 4-17, 11-29 ${\mu}g/kg$ of streptomycin, 2-29, 3-44 ${\mu}g/kg$ of ampicillin and 17-34, 26-48 ${\mu}g/kg$ of kanamycin respectively.

Electron-Morphometric Classification of the Native Honeybees from Korea Part V. Cluster Analysis by Canonical Function Score (한국산 재래꿀벌의 전자계량형태학적 분류 V. 정준판별함수값을 이용한 군분석)

  • Kwon Yong Jung;Huh Eun Yeop
    • Animal Systematics, Evolution and Diversity
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    • v.8 no.2
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    • pp.189-200
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    • 1992
  • In the present investigation, some cluster analyses were done for each population of the native honeybee workers(Apis cerana), which were selected for 15 different localities in spring and 16 in summer from Korea. In this analysis, the seasonal segregation was perfectly revealed by both Ward's and the average linkage between groups methods, whereas, it did not necessarily revealed any systematic relationship between geographical groups.

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A study on the Beehive Door Opening and Closing System using a Hornet Sound Analysis

  • Kim, Joon Ho;Han, Wook;Chung, Wonki
    • International Journal of Advanced Culture Technology
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    • v.10 no.3
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    • pp.393-396
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    • 2022
  • Recently, rapid climate change has had a significant impact on the ecosystem of honeybees. In addition, the problem of Vespa Hornets invasion of colonies has a fatal impact on the bee ecosystem, independent of climate change. Especially in late summer. This study relates to a method for preventing Vespa Hornets attack. In this study, we developed a Vespa Hornets sound detection device was developed by collecting and analyzing the sound of a Vespa Hornets and applying IoT technology. The developed device detects the sound of a Vespa Hornets when Vespa Hornets appears around the hive of the bees and sends a signal to automatically close the door of the beehive. The device that receives the signal drives the motor that controls the honeycomb door to close the beehive door. The Vespa Hornets sound detection device operates until no Vespa Hornets sound is detected. The system developed by us is expected to be installed in the beehives of actual beekeeping farms to dramatically reduce the damage caused by by Vespa Hornets.

Ameliorative effects of propolis upon reproductive toxicity in males

  • Saleem Ali Banihani
    • Clinical and Experimental Reproductive Medicine
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    • v.50 no.1
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    • pp.12-18
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    • 2023
  • Propolis is a sticky natural product produced by honeybees. Research studies have discussed the effectiveness of propolis, directly or indirectly, for ameliorating reproductive toxicity in males; however, this research has not yet been reviewed. The current paper presents an integrative summary of all research studies in Scopus and PubMed that investigated the effects of propolis on semen quality, and hence on male fertility, in conditions of reproductive toxicity. The consensus indicates that propolis ameliorates reproductive toxicity and enhances semen quality in vivo in test animals. These effects may be attributable to the ability of propolis to reduce testicular oxidative damage, enhance testicular antioxidant defense mechanisms, increase nitric oxide production, reduce testicular apoptotic injury, and boost testosterone production. However, to generalize these effects in humans would require further research.

Buffer Zones for Non-Target Organisms by Aerial Pesticide Application Around Rice Paddy (벼 재배지의 항공 방제시 비표적 생물에 대한 안전거리)

  • Park, Yeon-Ki;Jin, Yeoung-Duck;Kim, Byung-Seok;Park, Kyung-Hun;Lee, Jea-Bong;Shin, Jin-Sup;Bae, Chung-Han;Lee, Kyu-Seung
    • The Korean Journal of Pesticide Science
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    • v.11 no.1
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    • pp.32-37
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    • 2007
  • The study was carried out to establish buffer zone for the protection of the non-target organisms by aerial pesticide application. The two pesticide combination of 3-way tank-mixing of three pesticides for aerial application, ferimzone tricyclazole SC + BPMC EC + validamycin-A SL and hexaconzole EC + isoprothiolane EC+phenthoate EC were selected for the simultaneous control of key pests on paddy rice as blast, sheath blight, brown planthopper and moth. Aquatic organisms including killifish and loach in the paddy field and nearby water reservoirs were not affected by aerial application of the pesticides. However, all the water flea were killed, when they were exposed 10 m from the aerially sprayed site, while the water flea exposed in 30 m away from the site were not affected. Honeybees within 50 m in the wind direction and 20 m in the opposite wind direction showed a mortality of $7{\sim}100%$. Residues concentration of the pesticides in paddy water were not detectable level after six days from aerial application. Drifting distance of aerially sprayed droplet from the target area was within 30 m in the wind direction and 20 m in the opposite direction. Consequently, it was the buffer zones in the aerial pesticides application for the protection of the non-target organisms should be at least 50 m for aquatic organisms and 100 m for honeybees.

Estimation Study of Incremental Profit of the Imported Buff-tailed Bumblebee, Bombus terrestris, and Pollination Alternatives (서양뒤영벌 수입과 화분매개 대체안의 증분이익 추정 연구)

  • Yang, Dongjae;Kim, Sohee;Ji, Jeong-Yeon;Lee, Heungsik;Kim, Hyojoong
    • Korean Journal of Environment and Ecology
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    • v.33 no.4
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    • pp.408-421
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    • 2019
  • This study estimated and analyzed the incremental profits to compare the imported buff-tailed bumblebees, Bombus terrestris, and their pollination alternatives. A result of the analysis showed that the incremental profit, which is defined as the sales revenue minus the common production cost, was higher when using pollinator insects than when using the artificial pollination and that the incremental costs were lower when using domestic bumblebees or artificial pollination than when using imported bumblebees or honeybees. The incremental profits of each alternative were 46,801 million won for imported bumblebees, 47,170 million won for domestic bumblebees, 46,975 million won for honeybees, and 29,839 million won for artificial pollination. The incremental profit means the accounting profit that can be realized from each alternative. However, not all of the accounting profits can be attributed to pollen-mediated alternatives since they include potential costs such as imputed rent or normal profits. Considering the opportunity costs, which are the potential costs, it appears that the alternative of using imported bumblebees can lead to an economic loss. It means that fruit and vegetable farmers can expect additional economic profits if they choose other alternatives instead of using imported bumblebees.

A study on the honeycomb entry and exit counting system for measuring the amount of movement of honeybees inside the beehive (벌통 내부 꿀벌 이동량 측정을 위한 벌집 입·출입 계수 시스템 연구)

  • Kim, Joon Ho;Seo, Hee;Han, Wook;Chung, Wonki
    • The Journal of the Convergence on Culture Technology
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    • v.7 no.4
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    • pp.857-862
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    • 2021
  • Recently, rapid climate change has had a significant impact on the bee ecosystem. The decrease in the number of bees and the change in the flowering period have a huge impact on the harvesting of beekeepers. Accordingly, attention is focused on smart beekeeping, which introduces IoT technology to beekeeping. According to the characteristics of beekeeping, it is impossible to continuously observe the beehive in the hive with the naked eye, and the condition of the hive is mostly dependent on knowledge from experience. Although a system that can measure partly through sensors such as temperature/humidity change inside the hive and measurement of the amount of CO2 is applied, there is no research on measuring the movement path and amount of movement of bees inside the beehive. Part of the migration of honeybees inside the hive can provide basic information to predict the most important cleavage time in beekeeping. In this study, we propose a device that detects the movement path of bees and measures and records data entering and exiting the hive in real time. The device proposed in this study was developed according to the honeycomb standard of the existing beehive so that beekeeping farms could use it. The development method used a photodetector that can detect the movement of bees to configure 16 movement paths and to detect the movement of bees in real time. If the measured honeybee movement status is utilized, the problem of directly observing the colony with the naked eye in order not to miss the swarming time can be solved.

Therapeutic Effects of Natural Bee Venom in Sows with Mastitis, Metritis and Agalactia Syndrome (MMA 증후군 모돈에서 생봉독의 치료효과)

  • 최화석;강석수;최향순;박석천;정성일;조성구
    • Journal of Veterinary Clinics
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    • v.16 no.2
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    • pp.397-403
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    • 1999
  • This study was designed to examine the clincotherapeutic effect of natural honeybee (Apis mellifera) venom in sows with mastitis, metritis and agalactia (MMA) syndrome. Sows with MMA syndrome after parturition were assigned to treated and nontreated control groups. In treated group, 22 sows were bee acupunctured once a day for 3 consecutive days. Acupuncture points of Jiao-chao (GV-1, at the indentation between the base of tail and the anus), Yang-ming (ST-18, outside at the base of teat) and Hai-men (ST-25, about 1 cm lateral to the umbilicus) were stung by the natural honeybees. In control group, 20 sows were intramuscularly injected with a standard dosage of penicillin G (400,000 IU/kg of body weight) once a day for 3 consecutive days. At post-treatment, 85.0% of control sows and 90.9% of sows in treated group recovered from MMA syndrome. Bee acupuncture therapy didn't show any side effects such as allergy, intoxication, hemorrhage, or infection. It might be concluded that apitherapy was effective in controlling of sows with MMA syndrome.

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