• Title/Summary/Keyword: kenaf

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Comparison of Growth Characteristics and Chemical Composition of Kenaf (Hibiscus cannabinus L.) Varieties as a Potential Forage Crop (케나프 신육성 및 수집 품종의 생육과 사료적 특성 조사)

  • Lee, Ji-Yeon;Velusamy, Vijayanand;Koo, Ja-Yong;Ha, Bo-Keun;Kim, Dong-Sub;Kim, Jin-Baek;Kim, Sang-Hoon;Kang, Si-Yong
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.57 no.2
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    • pp.132-136
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    • 2012

  • Kenaf (Hibiscus cannabinus) is an annual herbaceous plant of the family Malvacease that has been planted in tropical Africa and Asia region for more than 4000 years and use as source of fiber, energy and feed stock. In this study, the physiological characters and chemical compositions of kenaf mutant variety "Jangdae" developed using gamma irradiation at the Korea Atomic Energy Research Institute (KAERI) were compared with three genetic resources (Auxu, C12, and C14-DRS). Jangdae showed the highest productivity growth rates in fresh yield, dry weight (DW) yield (leaf and stem), node number, and stem thickness. Especially, leaf DW yield of Jangdae was 1.6-3.1 times higher than that of three genetic resources. Also, stem DW yield of Jangdae was 1.6-2.1 times higher than that of three genetic resources. In the analysis of chemical composition, Jangdae showed 16.9% of crude protein content that was 0.86-0.94 times lower than three cultivars. However, Jangdae showed the highest neutral detergent fiber (NDF) contents in leaf (32.5%) and stem (75.2%). Also, acid detergent fiber (ADF) contents of stem and leaf in Jangdae were 64.4% and 33.9%, respectively. Total polyphenol and total flavonoid contents were 22.1 mg/g and 7.4 mg/g in Jangdae. Based on these results, Jangdae would have the potential to become a successful forage crop.

  • https://doi.org/10.7740/kjcs.2012.57.2.132 인용 PDF KSCI

Development of Stable Culture Techniques for Kenaf (Hibiscus cannabinus L.) (케나프 생산성 향상을 위한 안정 재배기술 개발)

  • Kang, Chan-Ho;Yu, Young-Jin;Choi, Kyu-Hwan;Kim, Hyo-Jin;Shin, Yong-Kyu;Lee, Gong-Jun;Ko, Do-Young;Song, Young-Ju;Kim, Chung-Kon
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.59 no.3
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    • pp.375-384
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    • 2014

  • Kenaf (Hibiscus cannabinus L.) was recognized as a potential source of forage. But the domestic cultivation techniques are not set standards yet. So we tested the basic culture techniques during 2012~2013 for getting a high yield and good grade forage production system. The best seeding method for mechanized planting (corn planter used) was hill seeding with $20{\times}20cm$ seeding distance. When we treated hill seeding with $20{\times}20cm$, the yield what we could get was 13,641 kg/10a and it was 32% more than that of conventional practice hill seeding with $20{\times}30cm$ seeding distance. The proper seeding date for getting high yield was May 1. In May 1, the yield per 10a was reached 13,423 kg, and it was 30% more than that of seeding at May 30. More over the crude protein content which was important factor for determinating forage nutritive value was 12.7% and it was higher 1.8% (relatively 16.5% high) than that of May 30 seeding. The most effective herbicide for kenaf was Fluazipof-p-butyl. It's herbicidal rate was 97% and phyto-toxicity was less than 5%. Regional adaptability for Jeollabuk-Do including Imsil Gun, Kochang Gun and Sunchang Gun were identified that the stable cultivation were possible in these area with average yield 12,400 kg/10a and it was about 1.7 times as compared to corn harvest.

  • https://doi.org/10.7740/kjcs.2014.59.3.375 인용 PDF KSCI

Study on Physical Properties of Maleic anhydride Grafted Polypropylene (PP)/Kenaf Fiber (KF) Composites (말레인산 무수물 그래프트 폴리프로필렌/케나프 섬유 복합체의 물성에 대한 연구)

  • Ku, Sun Gyo;Kim, Yu Shin;Hong, Young Eun;Kim, Dong Won;Kim, Ki Sung;Kim, Youn Cheol
    • Applied Chemistry for Engineering
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    • v.28 no.1
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    • pp.73-79
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    • 2017

  • Maleic anhydride (MAH) grafted polypropylene (PP-g-MAH) copolymers were prepared by changing MAH and styrene monomer (SM) content, using a twin screw extruder at $190^{\circ}C$. The grafting degree was measured by non-aqueous back titration method. The grafting degree of PP-g-MAH-SM copolymer was higher than that of PP-g-MAH at the same MAH content. PP-g-MAH-SM/kenaf fiber (KF) composites were also prepared by using a PP-g-MAH as a matrix at $200^{\circ}C$ and the KF content was fixed at 20 wt%. Based on the degradation temperature investigated by TGA, the thermal stability of PP-g-MAH-SM/KF composites was more enhanced than that of PP-g-MAH only. Mechanical properties of the composites were also improved when MAH and SM applied together. The adhesion degree between the copolymer and KF was confirmed by both SEM pictures of the fractured surface and contact angles.

  • https://doi.org/10.14478/ace.2016.1110 인용 PDF KSCI