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1999 Fiscal Year Final Research Report Summary

Production, marketing and consumption of Tropical non-wood forest products.

Research Project

Project/Area Number 09660161
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

WATANABE Hiroyuki  Graduate School of Agriculture, Kyoto University, Professor, 農学研究科, 教授 (90026633)

Co-Investigator(Kenkyū-buntansha) KANEKO Takayuki  Graduate School of Agriculture, Kyoto University, Instructor, 農学研究科, 助手 (20233877)
TAKEDA Shinya  Graduate School of Asian and African Area Studies, Kyoto Univeristy Associate Professor, アジア・アフリカ地域研究所, 助教授 (90212026)
Project Period (FY) 1997 – 1999
KeywordsTropical non-wood forest products / Tropics / Lac / Shellac / Rain tree (Samanea saman) / Food dyes / Lac insect
Research Abstract

Lac (Shellac) is a resin form material secreted from lac insect (Laccifer lacc). In tropical Asia, lac insect is inoculated to various host tress such as Schleichera oleosa, Butea monosperma, Samanea saman and Zizyphus mauritiana, etc. and lac is harvested. Lac imported to Japan is refined and the wax is then used for electric insulating material, paints, adhesion and coating materials for medicine tablets, foods and fruits. The pigment is also extracted and used as a dye for foods. The imported amount in 1980 was about 1,800 t, however, in 1998, the value drastically decreased to 537 t, about 1/4 of that in 1980. Shortage and instability of supply results in price rises and accelerates the replacement of natural lac with substitute chemical synthesis while the demand is high. Regreening around rural villages in tropical Asia is essential for the recovery of a rural life environment and even for global environmental conservation. Inoculation of lac insects to those trees planted and the harvest of lac evidently contributes to rural economics. Establishment of a trusting relationship between producers in tropical Asia and consumers in developed countries may be the only way to maintain a stable supply.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 渡辺弘之ほか: "ラック(シェラック)の生産・流通・消費の連関構造"森林研究. 71. 97-102 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Watanabe,H.et al.: "Management of natural Forest containing lacguer trees in northern Thailand"Tropical Forestry in the 21st century. 43-53 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takeda,S.et al.: "Management of Acacia catecluc Forest and Productinon of watch in northern Thailand"Tropical Forestry in the 21st century. 156-167 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡辺弘之: "オモシロ学問人生(分担)小さな虫が熱帯林を救う"NHK出版. 107-114 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡辺 弘之: "Hand book if agioforstry"国際農林業協力協会. 84 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Watanabe, H.,S.Takeda and T.Kaneko: "Lac(Shellac)production in tropical Asia and its utilization in Japan."Forest Research, Kyoto. No.71,(2). 97-102 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Watanabe,H.,S.Takeda,C.Khemnark,P.Sahunalu and S.Khamyong: "Management of natural forest containing lacquer trees (Melanorrhoea usitata) in northern Thailand."Tropical forestry in the 21st century. FORTRPO'96. 43-53 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takeda,S.,H.Watanabe, C.Khemnark, P.Sahunalu and S.Khamyong: "Management Acacia catechu forest and production of cutch in northern Thailand."Tropical forestry in the 21st century.FORTRPO'96. 156-167 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Watanabe,H.: "Small insect saves tropical forest. Pleaseant study life."NHK Shupan. 107-114. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Watanabe, H.: "Hand book of agroforestry"AICAF. 84 (1999)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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