• Korean Journal of Food Science and Technology
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• v.44 no.4
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• pp.422-427
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• 2012

A giant squid has not been utilized in the manufacture of the surimi-based product because of its strong fishy smell and weak gel forming ability. In this study, Amorphophallus konjac flour (AKF) was used to improve the quality of giant squid surimi-based products. The response trace plots showed that the gel texture and water retention ability (WRA) of surimi gel increased as the contents of AKF and surimi increased, whereas the water content decreased. Meanwhile, the whiteness of surimi gel increased as the contents of water and surimi increased, and AKF content decreased. Based on a sensory evaluation, giant squid surimi-products with AKF was inferior in color and taste compared to commercial surimi-based products, This inferiority could be improved by the addition of seasoning ingredients such as sweeteners. AKF successfully removed the fishy smell and improved the surimi gel properties. Therefore, AKF could be used as a food ingredient in surimi-based products.

• The Korean Journal of Rheology
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• v.5 no.2
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• pp.161-169
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• 1993

Glucomannan(G.M.)은 Amorphophallus Konjac C. Koch의 tuber로부터 분리되었고. 이 G.M.은 다시 침전제로 메탄올을 사용하여 4단계로 분별되었다.(F.1, F.2, F.3, F.4,). 각분 별물에 비하여 직선으로부터 벗어남을 보였다. Low shear viscometer로 G.M. 용액의 viscosity를 측정하였고 농도와 zero shear specific viscosity의 logarithm을 도시한 결과 inflection point를 나타내었다. 이것은 G.M. 분자들의 coil overlap의 시작에서 기인한 것이 고 묽은 용액에서 진한 용액으로의 전이행동은 임계농도. C＊=4/[η]에서 일어났고 이때의 zero shear specific viscosity는 10을 나타내었다. 또한 specific viscosity는 묽은 용액에대해 서는 C14로써 변화하였고 진한 요액에서는 C3.0으로변화하였다. G.M.의 고체상태에 대한 유 전성($\varepsilon$＇,$\varepsilon$＂)과 점탄성(C＇,C＂)계수들을 액체질소 온도에서부터 15$0^{\circ}C$ 온도범위에 걸쳐 4단계로 film을 건조시키면서 10Hz에서 측정하였다. G.M. film의 유전성과 점탄성의 허수부 분은 ($\varepsilon$＂, C＂), -10$0^{\circ}C$에서 peak를 나타내었고 이 peak는 hydroxy methyl 기들의 회전 운동에서 생겨난 것이다. 건조시키지 않은 상태의 G.M. film의 유전성과 점탄성의 허수부분 의 값들은 -5$0^{\circ}C$에서 물 분자의 운동에 의하여 생긴 peak를 보였다.

• Korean Journal of Medicinal Crop Science
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• v.2 no.1
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• pp.14-19
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• 1994

Elephant food(Amorphophallus konjac K.) have been utilized its tubers in workedmaterials for a health and diet food. The author supposed that it was increased the area of cultivation and demand. This experiments were conducted to select the proper covering material during winter in order to increase yield of tubers and decrease input by 2 year's continuous cultivation, also to verified ability of seed germination and to measured efficiency of photosynthesis of plant. The proper covering materials for wintering were rice straw and rice hull. These materials were covered at 5 cm thick and at field was promoted according to emergence appearing after winter. The yields were 5,790kg /10a at 4,730kg /10a, respectively. Yield increase was 120% and 80% than that of control. The seeds collected at August 22 were germinated about 84 percent, and it was not necessary to treatment of low temperature or germination-accelerated chemicals. The widest leaf area was ranged $1,218-1,438cm^2$ at October 20 and was varied. The efficiency of photosynthesis was highest at 65-95 days after leaf emergence. The line of broad leaf and high photosynthetic efficiency per unit area was greater compare with yield. Therefore, it was supposed that these characteristics will use a marker for selection for high-yielding lines.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.1
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• pp.22-27
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• 1992

This study was conducted to select an excellent goods and to estabilish the plant density of Amorphohpallus konjac. K about 3 local varieties and 2 introduced varieties through each fertilizer level. 1. Plant height and leaf width were increased according to increasing fertilizer level, and tuber yield was the highest at N-P$_2$ $O_{5}$ -K$_2$ O (14-10-14kg) per 10a as 390kg in Geumsan. 2. The more tuber size was large, the more yields per plant due to increasing the plant height and leaf width at low densities, while yields per 10a was decreased. 3. Among 5 varieties used, Jechon cultivar was good as a propagating variety because of increasing number of tuber and bulblet and Japan cultivar was high tuber yield per 10a.

• Korean Journal of Medicinal Crop Science
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• v.4 no.3
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• pp.261-264
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• 1996

This study was carried out to obtain a basic informations for the improvement of human health and the development of variety through analysis of inorganic compounds, contents of amino acids and saccharids to three elephant- foots (Amporphophallus Konjac. K) collected from Kumsan, Japan and China. Mannan as a carbohydrate of major component of an elephant-food was slightly high in Kumsan than that of Japan and China variety. Degree of viscosity of an elephant-foot depends upon the soluble free sugar contents and amino acid, contents of these free sugars were high in the order of Kumsan, China and Japan elephant-foot powder. Results of analysis of inorganic compounds to an elephant-foot used; Kumsan variety was shown to be high than those of China and Japan, especially. K, P and Fe in Kumsan variety were high, while Na and Ca were appeared to be high in China elephant-foot.

• Korean Journal of Plant Resources
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• v.10 no.4
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• pp.418-421
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• 1997

This research was performed to understand physiological and ecological characterisities and to de stable production by the way of the establishment of cultivation in elephant food. The results of the investigation of developmental characterisitics, leaf area, photosynthetic ability, chloroplast content for collective varieties are as follows. In the ecological characterisrics for five varieties of elephant food collected from domestic and foreign countries, appearance days for Japanese collective varieties was 60 days, which was two days earlier than domestic collective variety, Jechon collective variety. In appearance rate, Japanese collective variety was 90%, which was higher than Kumsan collective variety, 85%. In the development and yield of the ground portion, Japanese variety was the highest during all developmental period follwed by Chinese and Jechon collective varieties. The larger leaf area, the higher photosynthesis was found. In the amount of chlorophyll content, the higher intercepting light rate, the higher chlorophyll amount was found, which was 30, 50, 70% higher amount than non intercepting light rate.

• Journal of Microbiology and Biotechnology
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• v.23 no.3
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• pp.397-404
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• 2013

Paenibacillus xylanilyticus KJ-03 was isolated from soil samples obtained from a field with Amorphophallus konjac plants. A gene encoding xylanase was isolated from KJ-03 and cloned using a fosmid library. The xynA gene encodes xylanase; it consists of 1,035 bp and encodes 345 amino acids. The amino acid sequence deduced from the P. xylanilyticus KJ-03 xylanase showed 81% and 69% identities with those deduced from the P. polymyxa E681 and Paenibacillus sp. HPL-001 xylanases, respectively. The xynA gene comprises a single domain, consisting of a catalytic domain of the glycosyl hydrolase (GH) 10 family. The xynA gene was expressed in Escherichia coli BL21 (trxB), and the recombinant xylanase was purified by Niaffinity chromatography. The purified xylanase showed optimum activity with birchwood xylan as a substrate at $40^{\circ}C$ and pH 7.4. Treatment with $Mg^{2+}$ and $Li^+$ showed a slight decrease in XynA activity; however, treatment with 5 mM $Cu^{2+}$ completely inhibited its activity. The results of the thin layer chromatography analysis indicated that the major hydrolysis product was xylobiose and small amounts of xylose and xylotriose. XynA showed increased activity with oat spelt xylan and birchwood xylan, but showed only slight activity with locust bean gum.