• Title, Summary, Keyword: rice paper

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Extermination of Rice Weevils of Kraft Paper Containing Garlic Extractives and Pine Leaf Powder (마늘 추출액과 솔잎 가루를 이용한 크라프트지의 쌀벌레 방제 효과)

  • Kim, Chul-Hwan;Sin, Tae-Gi;Kim, Gyeong-Yun;Jung, Ho-Gyeong;Huh, Jeong-Soo
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.39 no.3
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    • pp.60-69
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    • 2007
  • This study developed rice packaging paper with exterminating performance against rice weevils such as Tenebroides mauritanicus and Sitophilus oryzae. The exterminating performance of packaging paper was given by treatment of garlic extractives and pine-leaf powder, respectively. For the exterminating test, rice weevils were put in petri dish containing non-treated packaging paper and functional packaging paper for twenty days. Right after being put in the petri dish, the rice weevils moved fast toward the area in the non-treated paper escaping from that in the functional paper. The lethality of the rice weevils on the functional paper reached over 50 per cent. The physical properties of the functional packaging paper were rarely changed in spite of treatment of the exterminating agents.

Study of Rice Husk Pulping for utilization of Rice Husk Fiber (왕겨섬유 활용을 위한 왕겨 펄프화 연구)

  • Oh, Min-Taek;Sun, Yong-Joo
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.44 no.3
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    • pp.63-69
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    • 2012
  • The rice husk is one of the major agricultural residue in KOREA. In this paper, the effects of various pulping conditions on the properties of rice husk pulp and handsheets made of rice husk fiber were evaluated in order to utilize the rice husk as an alternative source for wood pulp. Two typical alkali pulping, such as soda pulping and Kraft pulping were applied with various conditions of the pulping processes. The higher effective alkali and higher pulping temperature resulted in the higher efficiency in removal of lignin and ash, which leaded to the higher strength properties of handsheets made of rice husk fiber, but the lower yield of rice husk pulp. The better efficiency in production of rice husk pulp and the stronger handsheets were obtained by the Kraft pulping.

The Quality of Milled Rice with Reference to Whiteness and Packing Conditions during Storage (백도 및 포장조건별 쌀의 저장 중 품질 특성)

  • Yoon, Doo-Hyun;Kim, Oui-Woung;Kim, Hoon
    • Korean Journal of Food Preservation
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    • v.14 no.1
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    • pp.18-23
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    • 2007
  • This study investigated the effectsof whiteness and packing conditions on the quality characteristics of milled rice during storage at $25^{\circ}C$. Three kinds of packing materials (kraft paper sealed polyethylene and perforated polyethylene) were used to pack milled rice of different whiteness grades (36, 38, 40 and 42). The moisture content and weight of milled rice packed in kraft paper dropped very rapidly compared to values from milled rice packed in polyethylene because of high gas exchange through the paper. On the other hand, the increase in fat acidity of milled rice packed in kraft paper was less than that of milled rice packed in polyethylene because the moisture content of paper-packed rice fell rapidly. The overall quality of cooked rice rose with whiteness, and dropped with extended storage. The overall eating quality of milled rice paced in perforated polyethylene was bestwhen rice was prepared for the table after 8 weeks of storage.

Chemical Composition of Rice Hull and Morphological Properties of Rice Hull Fibers (왕겨의 화학적 조성 및 왕겨섬유의 형태적 특성)

  • Sung, Yong-Joo;Shin, Soo-Jeong;Oh, Min-Taek
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.41 no.3
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    • pp.22-28
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    • 2009
  • The rice hull could be the one of the most abundant agricultural waste in Korea. Since the efficient utilization of agricultural waste or byproducts of food industry would be critical for the sustainable growth, this study conducted the investigation of the chemical composition and the morphological properties of rice hull and rice hull fiber. It was found that there was big difference between the outer surface and the inner surface in the chemical composition and the morphological properties. Expecially, the outer surface showed the rugged patterns in which most of silica of rice hull existed. Little or no silica was found in the inner surface and rice hull fiber. The average fiber length of rice hull fiber was 0.45mm which was shorter than that of hardwood fiber. Rice hull fiber showed a round long shape which is typical shape of non-wood fibers

Analysis of freshness of rice depending on packing materials using MANOVA (다변량 분산분석을 이용한 포장 재질에 따른 쌀의 신선도 분석)

  • Kim, Seong-Ju
    • The Korean Journal of Applied Statistics
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    • v.29 no.7
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    • pp.1421-1428
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    • 2016
  • This paper concerns the freshness of rice depending on packing materials using MANOVA. Freshness of rice is measured in terms of moisture content and rice flavor. Ordinary paper and charcoal-coated paper are compared as packing materials. Storing places are considered as a block. The bivariate observations of moisture content and the rice flavor are compared using MANOVA for a completely randomized block design. It is observed that there is a significant difference between ordinary paper and charcoal-coated paper. Therefore we apply ANOVA for moisture content and rice flavor, respectively. Significant differences are observed for the moisture content but not for the rice flavor.

Detection of Rice Disease Using Bayes' Classifier and Minimum Distance Classifier

  • Sharma, Vikas;Mir, Aftab Ahmad;Sarwr, Abid
    • Journal of Multimedia Information System
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    • v.7 no.1
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    • pp.17-24
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    • 2020
  • Rice (Oryza Sativa) is an important source of food for the people of our country, even though of world also .It is also considered as the staple food of our country and we know agriculture is the main source country's economy, hence the crop of Rice plays a vital role over it. For increasing the growth and production of rice crop, ground-breaking technique for the detection of any type of disease occurring in rice can be detected and categorization of rice crop diseases has been proposed in this paper. In this research paper, we perform comparison between two classifiers namely MDC and Bayes' classifiers Survey over different digital image processing techniques has been done for the detection of disease in rice crops. The proposed technique involves the samples of 200 digital images of diseased rice leaf images of five different types of rice crop diseases. The overall accuracy that we achieved by using Bayes' Classifiers and MDC are 69.358 percent and 81.06 percent respectively.

Precise Estimation Method for Rice Planted Acreage using Accurate Agricultural Plot Vector Data and Moderate Resolution Satellite Raster Data

  • Takahashi, Kazuyoshi;Rikimaru, Atsushi;Mukai, Yukio
    • Proceedings of the KSRS Conference
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    • pp.269-273
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    • 2003
  • In the rice planted acreage estimation, high precise measurement and laborsaving are required by using satellite data. A method referring accurate agricultural plot vector data was used in this paper which improves the estimation accuracy of rice planted acreage compared with conventional methods. In this method, satellite data are not used for totalization, although they are used to discriminate whether the fields are rice planted or not. This paper described the result of the above method using to ASTER-VNIR data.

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Manufacture of the Fluidizing Media Using Rice Straw and Paper Wastewater Treatment (볏짚을 이용한 유동장 여재제조 및 제지폐수처리)

  • Yoon, Byoung-Tae;Kim, Gi-Yoon;Kim, Seong-Bo;Choi, Myoung-Jae
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.39 no.2
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    • pp.9-16
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    • 2007
  • Biological treatment using the activated sludge method and biofilm process has been developed for paper wastewater treatment. It is known that a water treatment using biofilm process has a high efficiency be-cause a great deal of microorganism could adhere to media. It is also known that various plastics such as polyurethane and polyethylene have been used as the media. In this study polyethylene was used as a media and rice straw an additive agent to improve porous and hydrophilic properties of the media for waste water treatment. Porosity and hydrophilic characteristics of polyethylene was increased as rice straw was added to polyethylene. Paper wastewater was then treated with newly developed environment materials. Rice straw showed excellent results in waste water treatment in various media. This environmentally friendly material prepared by polyethylene and rice straw could show similar results to those of a commercial porous polyurethane foam in wastewater treatment.

Development of Packaging Materials for Prevention and Extermination of Rice Weevils (쌀벌레 방제를 위한 포장소재의 개발)

  • Lee, Ji-Young;Kim, Chul-Hwan;Lee, Gyeong-Sun;Lee, Ji-Young;Cho, Hu-Seung;Yim, Su-Jin;Shin, Jung-Yong;Cho, In-Jun;Nam, Hye-Gyeong
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.45 no.2
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    • pp.41-45
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    • 2013
  • Extractives of garlic (Allium scorodorpasum) and green pepper (Capsicum annuum L.) were used to prevent and exterminate rice weevils which contaminate stored rice. The extractives exhibited great efficacy against Sitophilus oryzae and Tribolium castaneum by annihilating all the weevils contained in a bottle. Furthermore, kraft paper coated by 5% extractives also displayed good effectiveness against the rice weevils. When rice weevils were stored with rice in a sack made of extractives-coated kraft paper, the number of living insects was sharply decreased according to elapsed time. In particular, 1,4-benzoquinone, which is very harmful to human, was detected from rice contaminated by Sitophilus oryzae and Tribolium castaneum through the analysis of GC/MS.

Discriminant analysis of grain flours for rice paper using fluorescence hyperspectral imaging system and chemometric methods

  • Seo, Youngwook;Lee, Ahyeong;Kim, Bal-Geum;Lim, Jongguk
    • Korean Journal of Agricultural Science
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    • v.47 no.3
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    • pp.633-644
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    • 2020
  • Rice paper is an element of Vietnamese cuisine that can be used to wrap vegetables and meat. Rice and starch are the main ingredients of rice paper and their mixing ratio is important for quality control. In a commercial factory, assessment of food safety and quantitative supply is a challenging issue. A rapid and non-destructive monitoring system is therefore necessary in commercial production systems to ensure the food safety of rice and starch flour for the rice paper wrap. In this study, fluorescence hyperspectral imaging technology was applied to classify grain flours. Using the 3D hyper cube of fluorescence hyperspectral imaging (fHSI, 420 - 730 nm), spectral and spatial data and chemometric methods were applied to detect and classify flours. Eight flours (rice: 4, starch: 4) were prepared and hyperspectral images were acquired in a 5 (L) × 5 (W) × 1.5 (H) cm container. Linear discriminant analysis (LDA), partial least square discriminant analysis (PLSDA), support vector machine (SVM), classification and regression tree (CART), and random forest (RF) with a few preprocessing methods (multivariate scatter correction [MSC], 1st and 2nd derivative and moving average) were applied to classify grain flours and the accuracy was compared using a confusion matrix (accuracy and kappa coefficient). LDA with moving average showed the highest accuracy at A = 0.9362 (K = 0.9270). 1D convolutional neural network (CNN) demonstrated a classification result of A = 0.94 and showed improved classification results between mimyeon flour (MF)1 and MF2 of 0.72 and 0.87, respectively. In this study, the potential of non-destructive detection and classification of grain flours using fHSI technology and machine learning methods was demonstrated.