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Production Technology Set of Bidens Pilosa with High Functional Components

  

 蕭巧玲 (Assistant Researcher) 

 Taiwan Agriculture Researcher Institute, 

Council of Agriculture, Executive Yuan, R.O.C.(Taiwan) 

Tel:886- 4-23317116

 

 

 

 

 

At present, most of the raw materials of Bidens Pilosa in Taiwan are collected or produced in batches by herbal medicine dealers. After orders are placed by pharmaceutical factories, Bidens Pilosa are collected or produced in batches by farmers with the methods of harvest in the wild, extensive cultivation or small-scale harvest in fields. However, as the problems of pesticide dispersal in neighboring fields, heavy metal residues in soil and fluctuation of functional components are not taken into account in the production and harvest process. In addition, due to poor drying technology, the functional components of Bidens Pilosa often decline and the possible procurement cost increases. Based on the study of ecological characteristics, cultivation physiology and crop nutrition of Bidens Pilosa , this project analyzed the growth adaptability of railway beggerticks under different cultivation systems and meteorological environments, and developed appropriate management techniques to establish a safe cultivation system with functional utilization value.

The proposed technology integrates seed production, nutrient fertilizer formulation and application mode, pest management of low-risk pest safety control, efficient drying and preservation and other production sets, which can improve the content and quality safety of cytopiloyne (CP), a hypoglycemic index component of Bidens Pilosa , and produce safe and high-quality Bidens Pilosa as raw materials of new plant medicine, health food, and health food formula. Compared with the samples collected from wild species, the production technology developed by our institute can maintain the hypoglycemic components of salty herbs above 5 μg mg-1, which is on average 30% higher than that of the control group (harvest in the wild). In addition, it can increase the harvest times by at least 5 times, maintain the appropriate yield and quality of fresh herbs, and mitigate the reduction of CP content and yield caused by seasonal disasters. Most of the Bidens Pilosa purchased by non-governmental organizations are collected in the wild field. They often have shortcomings such as different growth periods, fluctuation of functional components and instability of fresh grass yield. Through the integrated technology set developed by our institute, the growth period of Bidens Pilosa  materials can be more consistent and the harvesting standards can be established, which can help stabilize the yield and CP content. In terms of pest control technology, it is known from the research of our institute that specific plant diseases and insect pests of Bidens Pilosa will greatly reduce the CP content. At present, there is no recommended medication for Bidens Pilosa . Therefore, there are often concerns about drug testing. In order to reduce the impact of plant diseases and insect pests on the CP components and the necessity of prevention and control, our institute has carried out field tests on non-chemical medicines suitable for Bidens Pilosa  and established a variety of control technologies with safety materials for application so that specific safety materials can be timely applied in line with the growth of pests and diseases to reduce the interference of source of pests and diseases on the yield and functionality. In order to reduce the influence on the CP content after harvesting, fresh-keeping and drying technology is used to reduce the degradation of CP content after harvest to ensure that the content of CP is maintained above 60-70%. In addition, it can shorten the drying period to only 4-5 days. In order to cooperate with the establishment of production line and production schedule, packaging and preservation methods were also developed to extend the shelf life, which can help to establish mass production process and work order production, and reduce the problem of functional degradation caused by improper storage.

The proposed technology can replace harvest in the wild, extensive cultivation or small-scale field harvest of raw materials for Chinese herbal medicines at the production end, integrate safe cultivation management, harvesting and post-harvest preservation, produce safe and low toxic raw materials complying to laws and regulations, reduce the misuse of high-risk raw materials from harvest in the wild by the practitioners, reduce the procurement cost of raw materials, make the products have functional segments, and create raw materials for domestic hypoglycemic functional products with stable prices.

Figure: Compared with the dried products harvested in the wild [right], the proposed technology [left] can maintain a higher content of active ingredients.


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