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Secretion amount of nectar a few medical herb plants in Korea
Ha sik-Sim,Man-young Lee,In-pyo Hong,Soon-ok Woo,Yong-soo Choi,Gyu-ho Byuon,Weon-ki Baiek,Young-ju Oh,Myeong-lyeol Lee 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
About 70% of total honey products produced by Korean bee keepers was acacia honey. The remaining 30% was chestnut honey, jujube honey, snowbell honey, and another honey. False acacia, went down in payability since the middle 2000s because of simultaneous blooming etiolation chlorsis decreases productivity after aging. Therefore, substitution honey plants were necessary. This study estimated nectar secretion amount of each flower and productivity per ha at 14 medical herbs. Each flower, Codonopsis lanceloata, estimated a majority nectar secretion amount at 176.08 ul for each of the 14 medical herbs. Astragalus membranaceus estimated majority nectar secretion amount at 1273.3 L per ha for each of the 14 medical herbs. Medical herbs were hypothesized with valuable honey plants.
Ha Seon Sim,Ui Jeong Woo,Won Jun Jo,Hye Jin Lee,Yu Hyun Moon,Soo Bin Jung,Su Ran Ahn,Jung Su Jo,Sung Kyeom Kim 한국원예학회 2021 한국원예학회 학술발표요지 Vol.2021 No.10
Physiological disorder (calcium deficiency) of Kimchi cabbage occurred by high temperature and frequent precipitation, which leads to unexpected price fluctuations of commodities. This purpose of this study was to profile on soluble sugars, glucosinolates, and ABA catabolites contents of Kimchi cabbage leaves under extreme and moderate high temperature treatments and chitosan foliar application. At April 6, 2020, the ‘Chungwang’ Kimchi cabbage were transplanted into 625L plastic boxes filled with commercial and general soil at open-field in Wanju. Experiments were combined with three day/night temperature levels, 36/32°C (E; extreme high), 28/24°C (M; moderate high), and 20/16°C (C; control), and two chitosan foliar application (200g/L; and non chitosan foliar application). Temperature and chitosan foliar application were performed at 42 days after transplanting, and temperature treatments were maintained during 8 days in extreme weather growth simulators. The samples were collected in 4 and 8 days after commencing high temperature treatments. After 4 days of chitosan foliar application, the glucose and fructose contents of E treatment were 67.5 and 59.4 μg·g<SUP>-1</SUP>, respectively, which were higher than non application. In the chitosan foliar application treatment, the aliphatic (gluconapin and glucobrassicanapin) and indole (glucobrassicin, 4-methoxyglucobrassicin, and neoglucobrassicin) glucosinolate contents of E treatment were 151.1, 342.2, 533.1, 1627, and 1807 μg·g<SUP>-1</SUP>, respectively, which were greater than non application. The ABA, DPA, and PA contents of E treatment under chitosan foliar application were 0.0114, 1.7, and 1.0 μg·g<SUP>-1</SUP>, respectively, higher than non application. After 8 days of chitosan folir application, the gluconapin, glucobrassicin, 4-methoxyglucobrassicin, and DPA contents of E treatment were 332.0, 445.8, 2037, 2.4 μg·g<SUP>-1</SUP>, respectively, which were greater than non application. There were no effects of chitosan foliar application in M and C treatments. Results indicated that the effect of chitosan foliar application is estimated to be approximately 4 days after commencing high tempearture treatment. The application of chitosan foliar increased ABA catabolites that relieve abiotic stress, it is considered to be effective in alleviating the high temperature damage of Kimchi cabbage.
Secretion characteristics of amount nectar Zizy jujube var. inermis in Korea
Ha sik-Sim,Man-young Lee,In-pyo Hong,Soon-ok Woo,Yong-soo Choi,Gyu-ho Byuon,Weon-ki Baiek,Young-ju Oh,Myeong-lyeol Lee 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
Jujube trees, herbal medicine material, produce not only their fruit but also jujube honey for bee and human’ food sources. Although jujube is an important honey plant after acacia bloom, the research was done with 15-year-old jujube trees grown in ChungDo-Gun, which there was no information on jujube floral nectar. According to the research, jujube nectar secretion mostly happens during dawn and morning for two days. The average number of inflorescence per tree is 638.1 according to the research. And also, the average number of flowers per inflorescence is 64.4. The amount of nectar secretion is 11.6 ul on average per flower, and hypothesized nectar secretion from 15-year-old tree per tree is 476.682 ul. Also,a jujube tree has 545.5ul hypothesized nectar secretion per ha by the research.
Ha Seon Sim,Won Jun Jo,Hye Jin Lee,Yu Hyun Moon,Ui Jeong Woo,Soo Bin Jung,Su Ran Ahn,Sung Kyeom Kim 한국원예학회 2021 원예과학기술지 Vol.39 No.6
This study determined the optimal growing degree days (GDD) and cultivars of Kimchi cabbage (Brassica rapa L. ssp. pekinensis) for growth and yield during spring cultivation under shading condition. There were nine treatments, and the experiments were conducted with three GDD levels (899, 924, and 961) and three cultivars (‘Chungwang’, ‘Cheongna’, and ‘Cheongok’) under shading conditions. The process-based model of Kimchi cabbage was applied for growth and yield prediction using meteorological data regarding light, temperature, wind, precipitation, and humidity in several regions. The number of leaves of ‘Chungwang’ Kimchi cabbage was greater than that of ‘Cheongna’ and ‘Choengok’ at all planting times. Most of the growth parameters were highest in the delayed transplanting treatment than in the other transplanting times. ‘Chungwang’ Kimchi cabbage was less sensitive to high temperature during spring cultivation than the other cultivars. GDD 924 was the most optimal time to harvest under the shading condition. GDD 750-870 is considered an appropriate harvest time in the primary production regions during the spring cultivation season. If shading is performed in these regions, constant production may be possible, thus, alleviating damage from high temperature.
Ha, Eun-Sol,Kim, Jeong-Soo,Lee, Seon-Kwang,Sim, Woo-Yong,Jeong, Ji-Su,Kim, Min-Soo Elsevier 2019 Journal of molecular liquids Vol.295 No.-
<P><B>Abstract</B></P> <P>In this study, the mole-fraction solubility data for telmisartan in dichloromethane + primary alcohol (methanol, ethanol, <I>n</I>-propanol or <I>n</I>-butanol) mixtures were measured at five different temperatures by employing a solid-liquid equilibrium using the shake-flask technique. In addition, the melting temperature and enthalpy of telmisartan were determined by differential scanning calorimetry, while powder X-ray diffraction analysis was used to evaluate the crystal form of telmisartan obtained before and after the solubility experiments. The solid state characterization confirmed no transformation of telmisartan into polymorphs. The solvent synergistic effect was observed in all binary mixtures. In particular, the telmisartan solubility in the mass fraction values of dichloromethane (<I>w</I>) of 0.8 at 298.15 K was found to be approximately 90.77 and 4.98 times higher than that in pure methanol and pure dichloromethane, respectively. The experimental solubility data for telmisartan were correlated and fitted to the van't Hoff, modified Apelblat, simplified CNIBS/R-K, Jouyban-Acree, Jouyban-Acree-van't Hoff, Jouyban-Acree-Apelblat, Ma, and Sun models. The thermodynamic parameters, such as the dissolution enthalpy (<I>∆H</I>°), Gibbs free energy (<I>∆G</I>°), and dissolution entropy (∆<I>S</I>°), confirmed that the dissolution of telmisartan in the mixtures was an endothermic process. Furthermore, dichloromethane and primary alcohol mixtures (<I>w</I> = 0.8) were used as the solvent in the preparation of telmisartan nanoparticles using the supercritical antisolvent (SAS) technique. The smallest particle size (630.8 nm) of the telmisartan nanoparticle obtained from a solvent mixture of dichloromethane and methanol was obtained. Results confirmed that the solubility data and estimated equations for telmisartan in the dichloromethane + primary alcohol mixtures with a strong synergistic solvation are useful in research and development for the purification and preparation of nanoparticles as well as in future studies on telmisartan to design and develop dosage forms.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The solubility of telmisartan in dichloromethane/primary alcohol mixtures was studied. </LI> <LI> The solubility data were correlated with various solubility models. </LI> <LI> The solubility data were used to prepare the nanoparticles. </LI> </UL> </P>
Ha, Eun-Sol,Ha, Dong-Hyeon,Kuk, Do-Hoon,Sim, Woo-Yong,Baek, In-hwan,Kim, Jeong-Soo,Park, Hee Jun,Kim, Min-Soo Elsevier 2017 The Journal of chemical thermodynamics Vol.113 No.-
<P><B>Abstract</B></P> <P>The solubilities of cilostazol in aqueous solutions containing polyethylene glycol 4000 (PEG 4000), polyethylene glycol 6000 (PEG 6000), polyvinylpyrrolidone K30 (PVP K30), and poly(1-vinylpyrrolidone-co-vinyl acetate) (PVP/VA) are measured at temperatures ranging from 298.15 to 318.15K. It increased with the increase in the hydrophilic carrier concentration and temperature. PVP/VA was the most effective polymer to solubilize cilostazol. The transfer Gibbs free energy (Δ<SUB>tr</SUB> <I>G</I>°) and enthalpy (Δ<SUB>tr</SUB> <I>H</I>°) values were negative, indicating that the transfer of cilostazol from only water to an aqueous hydrophilic polymer solution is spontaneous and energetically favorable. Furthermore, the Δ<SUB>tr</SUB> <I>G</I>° and Δ<SUB>tr</SUB> <I>H</I>° values decreased with the increase in the hydrophilic polymer concentration, indicating that solubilization is more favorable with the increase in the hydrophilic polymer concentrations. In particular, the Δ<SUB>tr</SUB> <I>G</I>° values considerably decreased for PVP/VA compared to PEG 4000, PEG 6000, and PVP K30. This result indicated that PVP/VA is an effective solubilizing additive for developing oral solid formulations of cilostazol.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Solubility of cilostazol in aqueous polymer solution (PEG, PVP, PVPV/VA) was determined. </LI> <LI> PVP/VA was the most effective polymer to solubilize cilostazol. </LI> <LI> Calculation of thermodynamic properties of the solution process. </LI> </UL> </P>