• Food Industry
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• s.5
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• pp.77-77
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• 1971

• 건강소식
• /
• v.9 no.10 s.83
• /
• pp.20-23
• /
• 1985

• The Monthly Diabetes
• /
• s.39
• /
• pp.66-69
• /
• 1993

• 건강소식
• /
• v.18 no.2 s.183
• /
• pp.54-55
• /
• 1994

• Korean Journal of Plant Tissue Culture
• /
• v.25 no.1
• /
• pp.7-11
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• 1998

Protoplasts were isolated from the parenchyma supension cultured cells of Streptanthus tortus using hydrolytic enzymes, 0.03% cellulase + 0.02% pectinase. Phloem cells and companion protoplasts were isolated from differentiated suspension cultured cells using hydrolytic enzymes, 0.2% macerase + 0.03% cellulase + 0.02% pectinase + 0.025% rohamet PC. Isolated parenchyma -and companion- protoplasts transported glucose into the cells, but not transported sucrose at all. On the other hand, isolated phloem cells transported sucrose into the cells actively, but not transported glucose. These results show for the first time that loading of sucrose into the phloem cells without nucleus was possible without contributing of companion cells and companion cells had not the ability to transport sucrose directly because of lack of sucrose carriers in the membrane. The sucrose transport into the isolated phloem cells depend on metabolic energy.

• Journal of Food Hygiene and Safety
• /
• v.38 no.4
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• pp.202-210
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• 2023

To analyze the pesticide residues in commercial bee pollen products in South Korea, 61 samples were collected and screened for 339 pesticides. Results revealed that approximately 34% (>LOQ) of samples were contaminated with at least one pesticide. The pesticide residue detection rates of domestic and imported samples were 31% and 44%, respectively. Furthermore, the pesticide residue detection rate of online distribution (60%) was higher than that of offline distribution (27%). Fifteen pesticides were discovered in bee pollen, and pendimethalin, chlorfenvinphos, chlorpyrifos, and fluazinam were detected in 7, 6, 3, and 2 order of frequency, respectively. Even though its concentration was low, chlorfenvinphos which is banned in food crops in the United States, European Union, and Korea, was detected in bee pollen samples commonly. Therefore, continuous investigation of pesticide residues in bee pollen products and their acceptance criteria is required for safety.

• 건강소식
• /
• v.6 no.8 s.46
• /
• pp.33-33
• /
• 1982

• 건강소식
• /
• v.7 no.8 s.57
• /
• pp.8-10
• /
• 1983

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.13 no.1 s.106
• /
• pp.32-37
• /
• 1992

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.11 no.5 s.98
• /
• pp.21-21
• /
• 1990