• Title/Summary/Keyword: Plant nutrition

Search Result 1,501, Processing Time 0.031 seconds

High Temperature Stress of Summer Chinese Cabbage in Alpine Region (고랭지 여름배추의 고온장해 원인 해석)

  • Hwang, Seon-Woong;Lee, Ju-Young;Hong, Sung-Chang;Park, Yang-Ho;Yun, Seung-Gil;Park, Moon-Hee
    • Korean Journal of Soil Science and Fertilizer
    • /
    • v.36 no.6
    • /
    • pp.417-422
    • /
    • 2003
  • The objective of this study was to assess the regime of heat shock protein and leaf temperature caused by high temperature stress in chinese cabbage grown in alpine region. In monsoon period, high temperature and heavy rain have caused a stress condition for the cultured higher plants. Chinese cabbages were grown in different altitude, i.e. 600 m and 1,100 m. It was demonstrated that heat shock protein (Hsp 90) in alpine chinese cabbage leaf was actively expressed by high temperature and surplus nitrogen application. As a results of thermo-graphically observed leaf temperatures, chinese cabbage grown in high altitude region were ranged from 20.5 to $24.3^{\circ}C$ while in low altitude from 24.0 to $31.5^{\circ}C$. Furthermore, analysis of assimilated nutrients indicated that total nitrogen content was higher in plant grown under high temperature than under low temperature.

Composition of Fatty Acid and Amino Acid in Water Extracted Material from Cockscomb Plant Root (맨드라미 뿌리의 물 추출물질의 지방산과 아미노산의 조성)

  • Nam, Hyun-Keun;Rho, Gi-Hwan
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.17 no.2
    • /
    • pp.172-175
    • /
    • 1988
  • Composition of fatty acids and amino acids in water extracted material of cooks comb plant root was studied by HPLC and GC-MS. There are 14 kinds of fatty acids in water extracted material of cockscomb plant root, especially, hexadecadienoic acid$(C_{16:2})$ was contained. Tricoasnoic acid, lignoceric acid, cerotic acid and 1,1'-[3-(2-cuclopentylethyl:dene)-1,5-pentanediyl] bis-cyclopentane were identified by HPLC and GC-MS. There are 16 kinds of acids containing ${\alpha}-aminobutyric$ acid in water extracted material of cockscomb plant root.

  • PDF

Physicochemical Properties of Dietary Fibers (식이섬유의 물리화학적 특성)

  • 황재관
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.25 no.4
    • /
    • pp.715-719
    • /
    • 1996
  • Dietary fibers consist mostly of complex carbohydrates such as cellulose, hemicelluloses and pectins, and also included are carbohydrate-based gums or hydrocolloids exampled as alginate, carrageenan, galactomannan xanthan, etc. Due to structural diversity, dietary fibers can be classified by various ways i.e., source, plant function, solubility, charge and topology. Understanding on the plant cell wall structure is of primary importance, since physicochemical properties of dietary fibers are dependent on the existence patterns in the cell wall. Depending on the four distinct observational dimensions, the physical parameters of dietary fibers were discussed in terms of raw sources, bulky & complex plant cell wall materials, individually separated hydrocolloid materials and specifically designed materials. Each existence state possesses the distinct physical parameters governing a variety of physiological properties of dietary fibers.

  • PDF

Determination of pectolinarin in Cirsium spp. using HPLC/UV analysis

  • Cho, Sunghun;Lee, Jaemin;Lee, Yoon Kyoung;Chung, Mi Ja;Kwon, Ki Han;Lee, Sanghyun
    • Journal of Applied Biological Chemistry
    • /
    • v.59 no.2
    • /
    • pp.107-112
    • /
    • 2016
  • Pectolinarin was isolated from the ethyl acetate fraction of Cirsium setidens using open column chromatography and was analyzed using spectrometry. Pectolinarin content in Cirsium spp. was determined using HPLC/UV. Pectolinarin content in the aerial part of Cirsium spp. was higher than that in the root and pappus. Pectolinarin content was highest in the aerial part of C. chlorolepis (110.65mg/g extract). Consequently, the aerial part of C. chlorolepis has potential for use in new natural medicinal products, health supplements, and beverages.

Isolation of Kaempferol Glycoside from Lindera sericea and Anti-inflammatory Effect (털조장나무잎의 소염활성 및 Kaempferol 배당체의 분리)

  • 박종철;박주권;김종홍;김성환;김남재
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.25 no.3
    • /
    • pp.519-522
    • /
    • 1996
  • From the leaves of Lindera sericea Bl., kaempferol-3,7-0-di-a-L-rhamnopyranoside was isolated and characterized by spectral data and acid hydrolysis. This compound is reported for the first time from this plant. The content of kaempferol glycoside was high in May and June, and low in the fall. And the methoanolic extract of title plant showed the inhibitory effect on carrageenin-induced edema.

  • PDF