Preliminarily preparing and preserving Radix et Rhizoma Salviae mitiorrhzae (Danshen) has been done for a long time. However, the processing method is simple, manual and based on experience. The effect of pretreatment, drying and storage methods on maintaining the quality of Rhizome and roots of Salvia miltiorrhiza Bunge postharvest was studied. The purpose of the study is to reduce the effect of fungi, maintain the quality of medicinal plants after storage time, limit the increasing of moisture content, keeping a good sensory quality by using organic acid in combination with low pressure. Salvia miltiorrhiza Bunge grown in Hoa Binh is harvested with enough growing time and highly active elements. The experiments used organic acids as acid citric and sodium bisulfate solutions to evaluate the pretreatment of Radix et Rhizoma Salviae mitiorrhzae. Danshen were pretreated and dried by convection drier and heat pump drier and were preserved by low-pressure. The results showed that dipping acid citric solution pH 2.5-3 for 30 minutes restricted the development of total microorganisms. Using a heat pump drier resulted in good sensory quality and retaining tanshinone IIA, salvianolic acid content in Radix et Rhizoma Salviae mitiorrhzae. The method of preserving Radix et Rhizoma Salviae mitiorrhzae by the low pressure of 200 mmHg, and 400 mmHg after 9 months at ambient temperature (25-30 oC), humidity (80-85%) maintained better quality than the control. Besides, the moisture medicine, tanshinone IIA, salvianolic acid content, and total microorganisms in the experiment samples changed slowly during the storage period.
Author
(s) Details
Nguyen
Thu Huyen
National Institute of Medicinal Material, Vietnam.
Cu Thi
Hang
National Institute of Medicinal Material, Vietnam.
Phan
Thi Thu
National Institute of Medicinal Material, Vietnam.
Nguyen
Thi Yen Chi
Hanoi-Amsterdam High School for the Gifted, Vietnam.
Quach
Anh Kiên
Phan Dinh Phung High School, Vietnam.
Nguyen
Minh Nha
Quang An Secondary School, Vietnam.
Please see the book here:- https://doi.org/10.9734/bpi/crpas/v4/2530
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