• Title/Summary/Keyword: Lotus

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Physicochemical Properties of Dried Burdock (Arctium lappa L.) Powder in the Peeling Process (박피 유무에 따른 우엉 분말의 이화학적 특성)

  • Hwang, Dong-Ju;Kim, Jin-Sook
    • Journal of the East Asian Society of Dietary Life
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    • v.25 no.5
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    • pp.902-910
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    • 2015
  • This study evaluated the qualitative properties of burdock (Arctium lappa L) peels as food material. Proximate composition, sweetness, pH, total acidity, mineral, fatty acid, free sugar, and organic acid contents of preprocessed burdock were measured. Crude ash, protein, fat, and total dietary fiber contents of non-peeled treated lotus roots were higher than those of peeled treated lotus roots (p<0.05). $^{\circ}Bx$, pH, and total acidity were not different in the peeling process. Redness and yellowness of lotus roots were reduced by the peeling process, whereas lightness increased (p<0.05). The mineral contents of Ca, K, Fe, and P were higher in non-peeled lotus roots, whereas non-peeled treated lotus root showed higher K contents (p<0.05). Maltose content was not significantly different, whereas fructose, sucrose and maltose contents were significantly different. Total organic acid contents were higher in non-peeled lotus roots (p<0.01). However total free amino acid contents were higher in peeled lotus roots (p<0.01).

Changes in the Quality Characteristics of Lotus Root Pickle with Beet Extract during Storage (비트 추출물 첨가 연근 피클의 저장 중 품질특성 변화)

  • Park, Bock-Hee;Jeon, Eun-Raye;Kim, Sung-Doo;Cho, Hee-Sook
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.38 no.8
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    • pp.1124-1129
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    • 2009
  • Quality characteristics of lotus root pickle added with beet water extract were investigated. Lotus root slices were salted with NaCl, soaked into pickling solution, and then stored at $20^{\circ}C$. Throughout the whole storage periods, pH, acidity, saltiness of pickles (control, 10% beet extract, 20% beet extract, 30% beet extract, 40% beet extract) ranged 3.45$\sim$3.51, 1.42$\sim$1.88% and 1.86$\sim$1.91, respectively. The pH of the experimental groups slowly decreased during the fermentation. The total acidity of the experimental groups were increased. In terms of color values, L and a values were decreased, but b values were increased, with increasing beet extract content. The hardness of lotus root pickles measured instrumentally was higher in lotus root pickle added with 40% beet water extract than in control pickle. Overall, based on sensory evaluation, lotus root pickle added 30% beet extract was preferred over the other samples.

Effects of pretreatments and storage temperature on the quality of lotus leaves (연잎의 품질특성에 미치는 전처리 방법과 저장온도의 영향)

  • Choi, Jeong-Sil;Kong, Moon-Hee;Yeo, Soo-Hwan;Choi, Han-Seok;Jeong, Seok-Tae
    • Food Science and Preservation
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    • v.23 no.2
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    • pp.155-161
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    • 2016
  • This study aimed to investigate the effects of pretreatments blanching, roasting, drying, and storage temperatures ($25^{\circ}C$, $4^{\circ}C$ and $-10^{\circ}C$) on their quality of lotus leaves. As a result, the lotus leaves retained a good appearance when stored at $25^{\circ}C$ for 5 days, $4^{\circ}C$ for 30 days, and $-10^{\circ}C$ for 90 days, regardless of the pretreatment used. At the same storage temperatures, pH, soluble solids, total acid content, polyphenols, and microorganisms were significantly different among the pretreatments (p<0.05). Soluble solids, pH, and total acid contents were not significantly different for the same pretreatments at different storage temperatures. However, the polyphenol, oxalic acid, and tartaric acid contents of lotus leaves were significantly different after drying and blanching treatments. In particular, it was shown that polyphenol content of the lotus leaf was affected by both pretreatment and storage temperature. In conclusion, the lotus leaves appeared in good condition until 5 days at $25^{\circ}C$, 30 days at $4^{\circ}C$, and 90 days at $-10^{\circ}C$, regardless of the pretreatment while influenced by storage temperature.

Effects of Scarification, Temperature and Sulfuric Acid Treatments on Seed Germination of White Lotus (Nelumbo nucifera) (백련(Nelumbo nucifera) 종자의 발아에 미치는 종피의 파상, 온도 및 황산처리 효과)

  • Im, Myung-Hee;Kim, Byoung-Woon;Park, Yong-Seo;Yang, Seung-Yul;Song, Chyae-Eun;Heo, Buk-Gu
    • Korean Journal of Plant Resources
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    • v.25 no.1
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    • pp.7-13
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    • 2012
  • This study was conducted to determine the effects of scarification temperature, and sulfuric acid treatments on seed germination of white lotus collected from the Muan districts, Jeonnam in Korea. Without scarification, white lotus seeds were not germinated at all at 15 days after seeding. However, seeds sacrificed at basal parts showed 100% germination rate at $25^{\circ}C$ 6 days after seeding. All the seeds floated (0.90 g) and soaked (1.18 g) in the water were completely germinated. Especially, the lotus seeds soaked in the water at $25^{\circ}C$ showed high germination rate. Seeds treated with 80% sulfuric acid for 40-160 hours were germinated completely within 6 days after seeding. No difference in seed germination rate of white lotus stored up to 0, 12 and 24 months after harvest was observed. Overall results would be useful means for propagation and production of white lotus.

Quality Changes in Peeled Lotus Roots Immersed in Electrolyzed Water Prior to Wrap- and Vacuum-Packaging (전기분해수 침지처리 박피연근의 랩 및 진공포장 저장 중의 품질변화)

  • Park, Kee-Jai;Jeong, Jin-Woong;Lim, Jeong-Ho;Kim, Bum-Kun;Jeong, Seong-Won
    • Food Science and Preservation
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    • v.15 no.5
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    • pp.622-629
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    • 2008
  • This study investigated changes in quality characteristics of wrap- and vacuum-packaged peeled lotus roots treated with strong acidic electrolyzed acid water (SAEW pH 2.58, ORP 1,128 mV, HClO 105.0 ppm) or low alkaline electrolyzed water (LAEW pH 8.56, ORP 660 mV, HClO 73.8 ppm) as immersion liquids prior to packaging and storage at 5C. Immersion of peeled lotus roots in SAEW and LAEW reduced initial microbial load by about 1 log compared to treatment with tap water (TW). Hardness differences on storage were observed. However, reduction in PPO activity by electrolyzed water was not reproducible. Changes in Hunter's color value and the color difference value ($\Delta$) of peeled lotus roots immersed in 0.5% (w/v) sodium metabisulfite (SMS) and electrolyzed water were smaller than those of roots treated with TW prior to storage. Sensory characteristics measured during storage were best-preserved in lotus roots previously immersed in 0.5% (w/v) SMS or electrolyzed water, compared to TW. Immersionin electrolyzed water and vacuum packaging preserves the quality of peeled lotus roots in terms of microbial, visual, and sensory aspects, at levels comparable to those offered by storage after treatment with 0.5% (w/v) SMS.

Prototype Extraction for the Categorization of Lotus and Crane Patterns Using Qualitative and Quantitative Approaches (질적, 양적 접근방법에 의한 연화문, 사문의 분류원형 추출)

  • 장수경;김재숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.20 no.6
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    • pp.1016-1026
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    • 1996
  • The purpose of this study was to extract protypes from features and concrete images of Lotus and Crane patterns. A qualitative and a quantitative methods were used. Qualitative informations were obtained from depth Interviews for pattern selection and feature extraction, and quantitative informations from a quail-experiment for pattern caregorization. The subjects were 20 female design students and non-design, students in Teajon. The results were summerized into a similarity metrix which was interpreted by the cluster analysis and the multi-dimensional scling(MDS). The patterns for the study were grouped into 8 clusters. Four dimensions were chosen for the MDS. The location of each pattern was visualized in a 2-dimesional spaces and the location of each cluster in a 3-dimensional spaces. The first dimension, "Lotus" vs "Crane" refired to pattern types, and the second dimension, "realistic" vs "transformable", the transformability. The third dimension, "simple" vs "complex", refired to the degree of simplification, and the forth dimension, "continuous" vs "discontinuous", continuity. The results of the Quantitative analysis could be summerized into 3-level prototype hiararchy In the first level, the patterns were devided clearly into two groups. Lotus and Crane by pattern types. In the second levelk, each group was devided into twosubgroups by continuity. In the third, each subgroup was divided into four subgroups by transformability and the degree of simplification. Four protypes, the final targets of the present study, were extracted from the third level. The are Stylized, Realistic, Decorative, Abstract types.d from the third level. The are Stylized, Realistic, Decorative, Abstract types.

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Formulation and Sensory Evaluation of Granule and Tablet from Lotus Rhizome(Nelumbo nucifera Rhizome)

  • Karki, Rajendra;Bang, Kyu-Ho;Kim, Dong-Wook
    • Korean Journal of Plant Resources
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    • v.21 no.1
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    • pp.103-109
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    • 2008
  • Nelumbo nucifera root(NNR) is used to clear summerheat(暑熱), bear Yang(陽) upwards and stop bleeding as mentioned in traditional Korean medicine. Also, it has been known that NNR is effective for lowering blood pressure and hyperlipidemia. The rhizome is considered to be nutritive, demulcent, diuretic and cholagogue and is used to treat piles, dyspepsia and diarrhea. An increasingly growing market for nutraceuticals and functional foods has triggered the study on natural sources for nutraceuticals, health foods and functional foods. But rhizome was inconvenient to formulate liquid dosage form(extract) by way of hot water because of its limited storage. Also the majority of the consumers have a complaint against the dosage. The purpose of this study was to develop the functional materials from NNR without side effects. We formulated the solid dosage form viz tablet and granule from the lotus root. Sensory evaluation was performed in terms of smell, taste, color and overall of lotus root and all colored forms(brown, dark brown, light green and yellow) of tablet and granule to evaluate the acceptability of the formulated tablets and granules. In sensory evaluation, among the formulated tablets and granules, light green granules obtained best score overall and yellow tablets showed the overall improved acceptability. In conclusion, lotus rhizome could be recommended as functional food. Further studies to clarify bioactive functions of Nelumbo nucifera in experimental animal model on atopic dermatitis are in progress.