Morus alba(white mulberry) mesophyll protoplasts were isolated from leaves of 30-45 day old sterile shoots,with protoplast yields of 2.5 x 107 g-1/F.W. after purification. The protoplasts were cultured in a modified K...Morus alba(white mulberry) mesophyll protoplasts were isolated from leaves of 30-45 day old sterile shoots,with protoplast yields of 2.5 x 107 g-1/F.W. after purification. The protoplasts were cultured in a modified K8P liquid medium containing 0.2 mg/L 2,4-D(2,4- Dichlorophe-noxy acetic acid), 1 mg/L NAA(Naphthyl acetic acid) and 0.5 mg/L BA(6-benzylaminopurine). A low plating density (5 x 104/ml) proved to be favourable to the division of protoplast-derived cells. The first divisioll occurred 4 days after culture, and the division frequency reached 24% at 10 days. A number of cell colonies and microcalli formed in 6 weeks. The microcalli were transferred onto MSB medium with 0.5 mg/L NAA and 0.5 mg/L BA for further proliferation. Shoot formation was initiated when the calli of 3-4 mm in size were transferred onto MSB differentiation medium with 0.1 mg/L NAA and 1 mg/L BA. The frequency of shoot formation was 35%. The shoots of 4-5 cm in height were excised from the callus and rooted on half strength MS medium with 0.5 mg/L IBA and 0.1 mg/L BA. After transplantation into pots, the regenerated plants grew vigorously in the phytotron.展开更多
The aim of this study was to evaluate the feed consumption and weight gain in calves fed with a nutritional block made of white mulberry （Morus alba） for a 90-day-period, involving dry season months （March-May） in...The aim of this study was to evaluate the feed consumption and weight gain in calves fed with a nutritional block made of white mulberry （Morus alba） for a 90-day-period, involving dry season months （March-May） in Tuxpan, Veracruz, Mexico. A total of 45 growing Zebu x Swiss calves with an average weight of 200 kg were assigned randomly in three groups of 15 animals, and the following treatments of nutritional block were offered to each group： grazing animals （To）, grazing animals plus nutritious block with white mulberry （T1）, and grazing animals plus nutritious block without white mulberry （T2）. A consumption of 0.545 kg/d from block in treatment T1 was observed, significantly improving calves growing and showing a weight gain of 0.933 kg/d. Use of white mulberry in nutritional blocks is a good alternative for growing calves, as a feeding strategy given the seasonality of pasture production in the tropics.展开更多
Lv Renhe,a master of Chinese medicine,was familiar with the sources of medicinal materials,the four nature and five flavors,and the characteristics of ascending,descending,floating and sinking.The study of medicine in...Lv Renhe,a master of Chinese medicine,was familiar with the sources of medicinal materials,the four nature and five flavors,and the characteristics of ascending,descending,floating and sinking.The study of medicine in clinical practice reflects the principle of“using medicine as a soldier”.In the treatment of diabetes mellitus and its complications,Professor Lv made good use of mulberry leaves,mulberry branches,mulberry white bark,mulberry and mulberry parasitism,and gave full play to the modern pharmacological effects of mulberry drugs such as hypoglycemic,hypotensive and lipidemic in the combined use,and achieved satisfactory results.展开更多
桑叶、桑枝、桑白皮、桑葚等药材源于桑科植物桑Morus alba L,具有良好的生理活性。桑源药材中含有黄酮类、生物碱类、多糖类、酚酸类、Diels-Alder型和香豆素类等多种化学成分,其中黄酮类化合物、多糖或生物碱是其特征性活性成分。桑...桑叶、桑枝、桑白皮、桑葚等药材源于桑科植物桑Morus alba L,具有良好的生理活性。桑源药材中含有黄酮类、生物碱类、多糖类、酚酸类、Diels-Alder型和香豆素类等多种化学成分,其中黄酮类化合物、多糖或生物碱是其特征性活性成分。桑叶、桑枝、桑白皮、桑葚及其有效成分可能通过抑制α-葡萄糖苷酶的活性、保护胰岛β细胞、改善炎症反应、抗氧化应激、调节线粒体代谢、调节肠道菌群、改善糖尿病并发症等途径达到防治2型糖尿病的作用。本文对桑源药材的化学成分及其在2型糖尿病防治中的应用及作用机制进行了系统综述,以期为桑源药材的开发及临床合理应用提供指导。展开更多
This research investigates the mechanical and thermal properties of Morus alba combined with polylactic acid in comparison with other natural fibers. The study uses three different fiber and PLA compositions - 20%, 30...This research investigates the mechanical and thermal properties of Morus alba combined with polylactic acid in comparison with other natural fibers. The study uses three different fiber and PLA compositions - 20%, 30%, and 40% respectively - to produce composite materials. In addition, another composite with the same fiber volume is treated with a 4% NaOH solution to improve mechanical properties. The composites are processed by twin-screw extrusion, granulation, and injection molding. Tensile strength measurements of raw fibers and NaOH-treated fibers were carried out using a single-fiber tensile test with a gauge length of 40 mm. It was observed that the NaOH surface treatment increases the resistance against tensile loading and exhibited improved properties for raw fiber strands. The diameter of the fibers was measured using optical microscopy. During this research, flexural tests, impact tests, differential scanning calorimetry (DSC), and heat deflection temperature measurements (HDT) were conducted to evaluate the mechanical and thermal properties of the developed composite samples. The results indicate that the mechanical properties of NaOH-treated Morus alba-reinforced polylactic acid outperform both virgin PLA samples and untreated Morus alba samples.展开更多
目的:微波萃取法提取桑叶和桑白皮中黄酮类成分。方法:采用正交试验设计优选出微波萃取的最佳工艺条件,并与传统醇提法相比较,同时比较桑的不同部位药材的黄酮含量。结果:微波萃取黄酮类成分的最佳工艺条件为:70%乙醇12倍量,于60℃萃取2...目的:微波萃取法提取桑叶和桑白皮中黄酮类成分。方法:采用正交试验设计优选出微波萃取的最佳工艺条件,并与传统醇提法相比较,同时比较桑的不同部位药材的黄酮含量。结果:微波萃取黄酮类成分的最佳工艺条件为:70%乙醇12倍量,于60℃萃取20 m in,其中提取溶剂对结果有显著影响。桑叶中的黄酮含量约为桑白皮中的9倍,且应用微波萃取法比传统醇提法分别高55%和32%。结论:微波萃取法在提取时间、溶剂用量及得率等方面明显优于传统的醇提法,适于工业生产。展开更多
文摘Morus alba(white mulberry) mesophyll protoplasts were isolated from leaves of 30-45 day old sterile shoots,with protoplast yields of 2.5 x 107 g-1/F.W. after purification. The protoplasts were cultured in a modified K8P liquid medium containing 0.2 mg/L 2,4-D(2,4- Dichlorophe-noxy acetic acid), 1 mg/L NAA(Naphthyl acetic acid) and 0.5 mg/L BA(6-benzylaminopurine). A low plating density (5 x 104/ml) proved to be favourable to the division of protoplast-derived cells. The first divisioll occurred 4 days after culture, and the division frequency reached 24% at 10 days. A number of cell colonies and microcalli formed in 6 weeks. The microcalli were transferred onto MSB medium with 0.5 mg/L NAA and 0.5 mg/L BA for further proliferation. Shoot formation was initiated when the calli of 3-4 mm in size were transferred onto MSB differentiation medium with 0.1 mg/L NAA and 1 mg/L BA. The frequency of shoot formation was 35%. The shoots of 4-5 cm in height were excised from the callus and rooted on half strength MS medium with 0.5 mg/L IBA and 0.1 mg/L BA. After transplantation into pots, the regenerated plants grew vigorously in the phytotron.
文摘The aim of this study was to evaluate the feed consumption and weight gain in calves fed with a nutritional block made of white mulberry （Morus alba） for a 90-day-period, involving dry season months （March-May） in Tuxpan, Veracruz, Mexico. A total of 45 growing Zebu x Swiss calves with an average weight of 200 kg were assigned randomly in three groups of 15 animals, and the following treatments of nutritional block were offered to each group： grazing animals （To）, grazing animals plus nutritious block with white mulberry （T1）, and grazing animals plus nutritious block without white mulberry （T2）. A consumption of 0.545 kg/d from block in treatment T1 was observed, significantly improving calves growing and showing a weight gain of 0.933 kg/d. Use of white mulberry in nutritional blocks is a good alternative for growing calves, as a feeding strategy given the seasonality of pasture production in the tropics.
基金The Sixth Batch of National Academic Experience Inheritance Project for Senior Traditional Chinese Medicine Experts of State Administration of Traditional Chinese Medicine(No.JX332)National Traditional Chinese Medicine Experts Inheritance Studio Construction Project of State Administration of Traditional Chinese Medicine(No.JB063)。
文摘Lv Renhe,a master of Chinese medicine,was familiar with the sources of medicinal materials,the four nature and five flavors,and the characteristics of ascending,descending,floating and sinking.The study of medicine in clinical practice reflects the principle of“using medicine as a soldier”.In the treatment of diabetes mellitus and its complications,Professor Lv made good use of mulberry leaves,mulberry branches,mulberry white bark,mulberry and mulberry parasitism,and gave full play to the modern pharmacological effects of mulberry drugs such as hypoglycemic,hypotensive and lipidemic in the combined use,and achieved satisfactory results.
文摘桑叶、桑枝、桑白皮、桑葚等药材源于桑科植物桑Morus alba L,具有良好的生理活性。桑源药材中含有黄酮类、生物碱类、多糖类、酚酸类、Diels-Alder型和香豆素类等多种化学成分,其中黄酮类化合物、多糖或生物碱是其特征性活性成分。桑叶、桑枝、桑白皮、桑葚及其有效成分可能通过抑制α-葡萄糖苷酶的活性、保护胰岛β细胞、改善炎症反应、抗氧化应激、调节线粒体代谢、调节肠道菌群、改善糖尿病并发症等途径达到防治2型糖尿病的作用。本文对桑源药材的化学成分及其在2型糖尿病防治中的应用及作用机制进行了系统综述,以期为桑源药材的开发及临床合理应用提供指导。
文摘This research investigates the mechanical and thermal properties of Morus alba combined with polylactic acid in comparison with other natural fibers. The study uses three different fiber and PLA compositions - 20%, 30%, and 40% respectively - to produce composite materials. In addition, another composite with the same fiber volume is treated with a 4% NaOH solution to improve mechanical properties. The composites are processed by twin-screw extrusion, granulation, and injection molding. Tensile strength measurements of raw fibers and NaOH-treated fibers were carried out using a single-fiber tensile test with a gauge length of 40 mm. It was observed that the NaOH surface treatment increases the resistance against tensile loading and exhibited improved properties for raw fiber strands. The diameter of the fibers was measured using optical microscopy. During this research, flexural tests, impact tests, differential scanning calorimetry (DSC), and heat deflection temperature measurements (HDT) were conducted to evaluate the mechanical and thermal properties of the developed composite samples. The results indicate that the mechanical properties of NaOH-treated Morus alba-reinforced polylactic acid outperform both virgin PLA samples and untreated Morus alba samples.
文摘目的:微波萃取法提取桑叶和桑白皮中黄酮类成分。方法:采用正交试验设计优选出微波萃取的最佳工艺条件,并与传统醇提法相比较,同时比较桑的不同部位药材的黄酮含量。结果:微波萃取黄酮类成分的最佳工艺条件为:70%乙醇12倍量,于60℃萃取20 m in,其中提取溶剂对结果有显著影响。桑叶中的黄酮含量约为桑白皮中的9倍,且应用微波萃取法比传统醇提法分别高55%和32%。结论:微波萃取法在提取时间、溶剂用量及得率等方面明显优于传统的醇提法,适于工业生产。
