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( Sang-deok Ji ),( Nam-suk Kim ),( Haeyong Kweon ),( Bo Hye Choi ),( Kee-young Kim ),( Young Ho Koh ) 한국잠사학회 2016 International Journal of Industrial Entomology Vol.33 No.1
The mulberry silkworm, Bombyx mori has been one of the most important domestic animals which have provided with silk fibers for weaving fabrics and a food for a protein and lipid source. In addition, various health improvement effects of diverse silkworm larval powders were reported. Recently we found that steamed and freeze-dried mature silkworm larval powder (SMSP) generated using white-jade (also known as Backokjam) silkworm variety extended healthspan and increased resistance to Parkinson`s disease in animal models. Because the colors of cocoons in silkworm varieties were caused by altered signal transduction pathways transporting phytochemicals from intestinal lumens to silk glands, we performed the proximate, amino acid, mineral, carbohydrates, fatty acid, and cholesterol composition analyses of SMSPs of 3 silkworm varieties which were weaving light yellow, golden, and red cocoons. Although most of nutrient compositions among 3 SMSPs were similar, there were significant differences in certain amino acids, minerals, and fatty acid compositions. Red silk silkworm (RS)-SMSP had higher contents of crude proteins and total amino acids than other SMSPs. In addition, the ratio of n-3/ n-6 unsaturated fatty acids were higher than the other SMSPs. In contrast Golden silk silkworm (GS)-SMSP had higher ratio of potassium/sodium than the other SMSPs. These nutrient analysis results suggested that 3 SMSPs might have common and unique health improvement effects. Thus, further studies in the functionalities of the 3 SMSPs will reveal unknown their health improvements effects.
Ji, Sang-Deok,Kim, Nam-Suk,Kweon, HaeYong,Choi, Bo Hye,Kim, Kee-Young,Koh, Young Ho Korean Society of Sericultural Science 2016 International Journal of Industrial Entomology Vol.33 No.1
The mulberry silkworm, Bombyx mori has been one of the most important domestic animals which have provided with silk fibers for weaving fabrics and a food for a protein and lipid source. In addition, various health improvement effects of diverse silkworm larval powders were reported. Recently we found that steamed and freeze-dried mature silkworm larval powder (SMSP) generated using white-jade (also known as Backokjam) silkworm variety extended healthspan and increased resistance to Parkinson's disease in animal models. Because the colors of cocoons in silkworm varieties were caused by altered signal transduction pathways transporting phytochemicals from intestinal lumens to silk glands, we performed the proximate, amino acid, mineral, carbohydrates, fatty acid, and cholesterol composition analyses of SMSPs of 3 silkworm varieties which were weaving light yellow, golden, and red cocoons. Although most of nutrient compositions among 3 SMSPs were similar, there were significant differences in certain amino acids, minerals, and fatty acid compositions. Red silk silkworm (RS)-SMSP had higher contents of crude proteins and total amino acids than other SMSPs. In addition, the ratio of n-3/n-6 unsaturated fatty acids were higher than the other SMSPs. In contrast Golden silk silkworm (GS)-SMSP had higher ratio of potassium/sodium than the other SMSPs. These nutrient analysis results suggested that 3 SMSPs might have common and unique health improvement effects. Thus, further studies in the functionalities of the 3 SMSPs will reveal unknown their health improvements effects.
Anti-melanogenesis nd Skin Protective Activity of Panax ginseng Calyx Ethanol Extract
Sang Yun Han(한상윤),Eun Ji Kim(김은지),Yohan Hong(홍요한),Han Gyung Kim(김한경),Deok Jeong(정덕),Sang Hee Park(박상희),Nurinanda Prisky Qomaladewi,Song Chaoran,Nur Aziz,Rojas Lorz Laura,Jae Youl Cho(조재열) 한국약용작물학회 2019 한국약용작물학회 학술대회논문집 Vol.2019 No.2
Ji Hyung Lee,Khulan Amarsanaa,Jinji Wu,Sang-Chan Jeon,Yanji Cui,Sung-Cherl Jung,Deok-Bae Park,Se-Jae Kim,Sang-Heon Han,Hyun-Wook Kim,Im Joo Rhyu,Su-Yong Eun 대한생리학회-대한약리학회 2018 The Korean Journal of Physiology & Pharmacology Vol.22 No.3
Mitochondrial calcium overload is a crucial event in determining the fate of neuronal cell survival and death, implicated in pathogenesis of neurodegenerative diseases. One of the driving forces of calcium influx into mitochondria is mitochondria membrane potential (ΔΨm). Therefore, pharmacological manipulation of ΔΨm can be a promising strategy to prevent neuronal cell death against brain insults. Based on these issues, we investigated here whether nobiletin, a Citrus polymethoxylated flavone, prevents neurotoxic neuronal calcium overload and cell death via regulating basal ΔΨm against neuronal insult in primary cortical neurons and pure brain mitochondria isolated from rat cortices. Results demonstrated that nobiletin treatment significantly increased cell viability against glutamate toxicity (100 μM,20 min) in primary cortical neurons. Real-time imaging-based fluorometry data reveal that nobiletin evokes partial mitochondrial depolarization in these neurons. Nobiletin markedly attenuated mitochondrial calcium overload and reactive oxygen species (ROS) generation in glutamate (100 μM)-stimulated cortical neurons and isolated pure mitochondria exposed to high concentration of Ca2+ (5 μM). Nobiletininduced partial mitochondrial depolarization in intact neurons was confirmed in isolated brain mitochondria using a fluorescence microplate reader. Nobiletin effects on basal ΔΨm were completely abolished in K+-free medium on pure isolated mitochondria. Taken together, results demonstrate that K+ influx into mitochondria is critically involved in partial mitochondrial depolarization–related neuroprotective effect of nobiletin. Nobiletin-induced mitochondrial K+ influx is probably mediated, at least in part, by activation of mitochondrial K+ channels. However, further detailed studies should be conducted to determine exact molecular targets of nobiletin in mitochondria.
Sang Deok Ji,Nam-Suk Kim,Hae Yong Kweon,Bo Hye Choi,Sun Mi Yoon,Kee-Young Kim,Young Ho Koh 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.4
The nutrient components of 3 differently preparedwhite jade silkworm(also knownas Baek Ok Jam) larval powders (WJSLPs) were examined. A proximate analysis of 3 WJSLPs revealed that steamed and freeze-dried mature silkworm larval powder (SMSP) had the highest protein contents among the 3WJSLPs. In addition, the ASP, SER, GLY, ALA, TYR, and THR contents in SMSP and freeze-driedmature silkworm larval powder (FMSP) significantly increased compared to those in freeze-dried 3rd day of 5th instar silkworm larval powder (FDSP). Even though SMSP and FMSP had reducedmineral contents compared to those of FDSP, the essential minerals, such as Ca,Mg, K, Na, P, S, Zn, Fe,Mn, and Cu, were highly enriched in SMSP and FMSP. The secondmost enriched nutrient in the 3WJSLPswas crude lipids. The 3 WJSLPs showed high contents ofΩ-3 (n-3) fatty acids,which are one of themost popular health improvement supplements.Werecently showed that SMSP could extend the lifespan and prevent the onset and progression of Parkinson's disease in Drosophila models (Nguyen et al., 2016). Thus, further studies in the functionalities of the 3 WJSLPs will reveal their unknown health improvement effects.
Ji, Sang-Deok,Son, Jong-Gon,Kim, Seong-wan,Kim, Nam-Suk,Kim, Kee-Young,Kweon, Hae-Yong,Seong, Gyu-Byeong,Koh, Young-Ho Korean Society of Sericultural Science 2017 International Journal of Industrial Entomology Vol.34 No.2
Cooked mature silkworms have received increasing attention as a new source of income for sericultural farms. Quality improvement of these worms as the end-product requires prevention of the following: inclusion of unfertilized silkworm eggs, mixing with impurities, producing undercooked or overcooked mature larvae, and mixing spewed silk substance. Preventing unfertilized eggs and impurities and reducing undercooked or overcooked mature larvae can be achieved by sericultural farms. However, the prevention of spewed silk substance requires the development of new techniques. This study developed new techniques for optimum cold storage temperature, soaking, and hydro-thermal treatment to minimize the spewing of mature larvae prior to steaming: when larvae mature after 7 days on the $5^{th}$ instar, they should be soaked in water at room temperature of $25^{\circ}C$ immediately upon collection and stored at $8^{\circ}C$ for less than 3 days. They should be soaked in boiling water for approximately 10 s immediately before steaming to kill the larvae and cooked with steam. This method allows for the production of high-quality mature larvae without spewed silk substance. These new techniques will considerably improve the production of well-cooked quality mature larvae by minimizing silk substance spewed out from the larvae.