NGHIÊN CỨU ĐẶC ĐIỂM HÌNH THÁI, GIẢI PHẪU VÀ HOẠT TÍNH KHÁNG OXY HOÁ CỦA CAO CHIẾT TỪ LÁ CỦA LOÀI BỜI LỜI ĐẮNG (LITSEA UMBELLATA (LOUR.) MERR) Ở VIỆT NAM

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Tác giả: Phú Hiệp Hoàng, Thị Thu Hà Nguyễn, Quang Trung Từ, Trọng Lượng Vũ

Ngôn ngữ: vie

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Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2023

Mô tả vật lý: tr.457-464

Bộ sưu tập: Metadata

ID: 339717

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Bời lời đắng (Litsea umbellata (Lour.) Merr) khá phổ biến ở nước ta và phát triển ở nhiều nơi: Lào Cai, Vĩnh Phú, Gia Lai, Kontum,.... Nghiên cứu nhằm mô tả đặc điểm hình thái, giải phẫu và hoạt tính chống oxy hóa của cao chiết từ lá Bời lời đắng. Kết quả cho thấy: Bời lời đắng có rễ cọc phát triển đâm sâu xuống đất, kích thước rễ tương đối đều nhau. Trong cấu tạo thứ cấp của rễ cây Bời lời đắng, gỗ và libe sắp xếp theo kiểu bó dẫn chồng chất hở. Thân cây có mô dày góc phát mạnh ở thân sơ cấp. Mô cứng tạo thành vòng quanh thân. Bó mạch nhiều, chúng được liên kết với nhau bởi hệ thống tia gỗ. Mô mềm ruột nằm ở phần giữa thân gồm các tế bào hình đa giác hoặc hơi tròn có kích thước khác nhau. Lá mọc so le, hình bầu dục, thuôn hình trái xoan, thon hẹp hay tròn ở gốc, nhọn ở đầu, thường mọc thành cụm ở đầu cành, mô giậu có một lớp phát triển mạnh, mặt dưới của lá có lỗ khí làm nhiệm vụ thoát hơi nước và trao đổi khí với môi trường. Cao chiết ethanol của lá cây Bời lời đắng có hoạt tính oxy khá cao với giá trị IC50 trung bình là 3,22 µg/ml. Từ kết quả nghiên cứu cho thấy, Bời lời đắng là một dược liệu tiềm năng chứa nhiều các hợp chất kháng oxy hóa.Litsea umbellata (Lour.) Merr) is quite common in our country and grows in many places: Lao Cai, Vinh Phu, Gia Lai, Kontum,.... The study aimed to describe the morphological characteristics, Anatomy and antioxidant activity of bitter leaf extracts. The results show that: Boi Lii has a well-developed root that penetrates deep into the ground, the root size is relatively equal. In the secondary structure of bitter gourd roots, the wood and libe are arranged in an open superimposed bundle. Stems have thick tissue at the primary stem. Hard tissue forms a ring around the body. Vascular bundles are many, they are linked together by a wood beam system. Intestinal soft tissue located in the midsection of the body is composed of polygonal or slightly rounded cells of different sizes. Leaves alternate, oval, oblong-oval, narrow or rounded at base, pointed at tip, often clustered at branch tips, hedging tissue has a strongly developed layer, underside of leaf has stomata. transpiration and gas exchange with the environment. The ethanol extract of bitter gourd leaves has high oxygen activity with an average IC50 value of 3.22 µg/ml. From the research results, it is shown that bitter gourd is a potential medicinal plant containing many antioxidant compounds.

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