• Title, Summary, Keyword: waxy rice

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Physicochemical Properties of Japonica Non-Waxy and Waxy Rice during Kernel Development

  • Kim, Sung-Kon;Jung, Sun-Ok
    • Food Science and Biotechnology
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    • v.15 no.2
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    • pp.289-297
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    • 2006
  • In this study we examined the changes in weight and dimension, protein and amylose contents, and pasting properties of brown rice flour, as well as the gelatinization properties of starch, from two non-waxy japonica cultivars and one waxy japonica cultivar planted in an experimental field in 2002 under the same fertilizer conditions. The weight of both rough and brown rice increased consistently up to 42 days after flowering (DAF) for the non-waxy rice and to 35 DAF for the waxy rice. The changes in dimension of the brown rice kernel indicated that the length was maximized first, followed by breadth and then thickness. The protein content of the non-waxy rice remained fairly constant, but that of the waxy rice decreased by about 1% after 14 DAF. The amylose content of the non-waxy brown rice flour increased, but that of the waxy brown rice flour decreased during kernel development. As the kernel developed, the peak viscosity of the non-waxy rice flour increased up to 35 DAF, after which it decreased, whereas that of the waxy brown rice flour increased consistently. The gelatinization temperature of starch also increased in the waxy rice during kernel development up to 21 DAF. The gelatinization enthalpy of starch, however, increased in all rice cultivars throughout the kernel development.

Quality Characteristics of Hobakjook prepared with Waxy and Non-waxy Rice Powder (찹쌀가루와 멥쌀가루의 첨가량에 따른 호박죽의 품질 특성)

  • Lee, Chul Kyu;Yoon, Hye Hyun
    • Culinary science and hospitality research
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    • v.23 no.3
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    • pp.137-146
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    • 2017
  • This study was conducted to examine the sensory quality characteristics of Hobakjook (pumpkin porridge) samples prepared with 0%, 4%, 8%, 12%, 16% of waxy rice powder and non-waxy rice powder. The moisture content and spreadability decreased with the addition of waxy and non-waxy rice powder, while total soluble solid and viscosity increased with the addition of rice powder (p<0.001). The lightness (L-values) of Hobakjook significantly increased with the addition of both rice powder, but the yellowness (b-values) decreased. In the attribute difference test of sensory evaluation, yellowness, gloss, pumpkin flavor, sourness, smoothness and intensity of after-taste were amount-dependently decreased with the addition of both rice powders. However, sweetness, savory flavor, astringency, gelatinized rice flavor, and viscosity significantly increased as the amount of rice powder increased. The rankings of overall acceptance by consumers were 12% > 16% > 8% > CON (0%) & 4% for Hobakjook samples with waxy rice powder, while 8% & 12% > 16% > CON(0%) & 4% for Hobakjook samples with non-waxy rice powder. However, there was no significant preference between waxy rice powder and non-waxy rice powder.

Effect of Ingredients on In vitro Digestibility and Physical Properties of Ginseng-Chicken Meat Porridge (재료에 따른 인삼닭죽의 in vitro 단백질 및 전분 분해율과 물리적 특성)

  • Shin, Eun-Soo;Ryu, Hong-Soo
    • Korean journal of food and cookery science
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    • v.24 no.3
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    • pp.273-281
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    • 2008
  • To determine the nutritional quality and physical properties of ginseng-chicken meat porridge, 10 kinds of ginsengchicken meat porridge samples containing waxy and/or non-waxy rice were analyzed for in vitro protein digestibility and their degree of starch hydrolysis. Viscosity and spreadness were determined for the gelatinized pastes of the porridge samples. Microphotographs of the starch granules and pastes were studied to confirm structural changes in the rice starch during cooking. The starch paste from non-waxy rice porridge had higher viscosity than the starch paste from the waxy rice porridge; however, in the case of the ginseng-chicken meat porridge, the difference in viscosity was negligible. Microphotograph comparisions between the waxy rice porridge and non-waxy rice porridge indicated apparent differences in the shapes of their starch granules and gels. The granule surface of the non-waxy rice was very rough while that of the waxy rice was very smooth; this difference would lead to organoleptical discrepancy. The added ginseng increased the protein digestibility of the chicken meat; however, the protein digestibility of the ginseng-chicken meat porridge was lower than that of the chicken meat or rice porridge due to inhibited protein digestion by the gelatinized starch. Finally, the rice porridge had increased starch hydrolysis with additions of chicken meat and vegetables.

Bran structure and some properties of waxy rice starches (찹쌀의 겨층 구조 및 전분의 몇가지 성질)

  • Kim, Sung-Kon;Sohn, Jung-Woo
    • Applied Biological Chemistry
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    • v.33 no.2
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    • pp.105-108
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    • 1990
  • The numbers of aleurone layers and thickness of pericarp of waxy rice in dorsal side were higher than those in vental side, However, varietal characteristics of the bran structures were observed. The water uptake rates of brown rice at $60^{\circ}C$ were similar between $j{\times}indica$ varieties(Hangangchalbyeo, H and Baegunchalbyeo, B) and higer than that of japonica variety (Shinsunchalbyeo, S). Inherent viscosities for H, B and S waxy rice starches were 1.92, 1.84 and 1.73 $dlg^{-1}$, respectively. The minimum moistures for gelatinization of waxy rice starches determined by DSC were $36.4{\sim}38.6%$ which represented 4moles of water per mole of hexose unit.

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Texture and Retrogradation Characteristics of Injeulmi Made by Different Varieties of Waxy Rice (품종을 달리하여 제조한 인절미의 텍스쳐 및 노화도 특성)

  • 최영희;강미영
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.4
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    • pp.837-844
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    • 1999
  • The textural properties and retrogradation of injeulmi(Korean traditional waxy rice cake) made from various waxy cultivars were examined to compare the varietal difference. Injeulmi made from Shinsun chalbyeo and Whasunchalbyeo were exhibited relatively soft texture, while Taichung Sen Glu I and Yuk donongrimna were shown high adhesivness. Intermediate or long grain rice such as Yukdonongrimna, Hangangchalbyeo and Taichung Sen Glu I had a tendency to be rapidly retrogradatated as compared with short grain rice, Shinsunchalbyeo and Whasunchalbyeo. Amylogram characteristics of these intermediate or long grain rice cultivars were shown high value in consistency and low value in setback. Studies per formed by various cookery procedure demonstrated that injeulmi made from cooked waxy rice was softer and delaying retrogradation than made from waxy rice flour.

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Texture of Cooked Milled Added Waxy Black Rice and Glutinous Rice (찰흑미와 찰벼를 첨가한 혼합밥의 텍스쳐)

  • Oh, Geum-Soon;Na, Hwan-Sik;Lee, You-Seok;Kim, Kwan;Kim, Sung-Kon
    • Korean Journal of Food Science and Technology
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    • v.34 no.2
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    • pp.213-219
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    • 2002
  • This study was investigated cooking conditions of cooked milled rice added 5%, 7%, 9% and 11% ratios of waxy black and glutinous rices. The L value (lightness) of cooked milled rice added waxy black and glutionus rices were decreased according to increase added ratios, the a value (redness) of waxy black rice was decreased and b value (yellowness) of glutinous rice was increased while waxy black rice was decreased. In case of cooked milled rice added 9% glutinous rice, it was showed the highest values for springiness, cohesiveness, chewiness, adhesiveness and adhesiveness/hardness ratio except gumminess and hardness and all parameters of waxy black rice in texture analyser was showed the highest values at 9%, but the other parameters except cohesiveness were no significant difference at p<0.05 level. In sensory evaluation, the cooked milled rice added 9% glutinous rice was showed the highest values for flavor, clumpiness and taste and 11% glutinous rice was showed the highest values for color, glossiness, cohesiveness, hardness, adhesiveness and acceptability. Also the cooked milled rice added 9% waxy black rice was showed the highest values for cohesiveness, taste and acceptability and 11% waxy black rice was showed the highest values for flavor, color, glossiness, clumpiness, hardness and adhesiveness. Correlations between sensory parameters of cooked milled rice added waxy black rice and glutinous rice were found a significant relationship between taste and acceptability and the correlation coefficients of cooked milled rice added waxy black rice and glutinous rice were r=0.7153 and r=0.5760, respectively.

Studies on the Processing Properties and Interactions Between Porcine Blood Proteins and Waxy Rice Starch During Making Porcine Blood Cake

  • Lin, Chin-Wen;Yang, Jeng-Huh;Chu, Hsien-Pin;Su, Ho-Ping;Chen, Hsiao-Ling;Huang, Chia-Cheong
    • Asian-Australasian Journal of Animal Sciences
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    • v.14 no.3
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    • pp.358-364
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    • 2001
  • The physiochemical properties and interactions between porcine blood and waxy rice were determined. Addition of calcium chloride (0.15%) improved acceptability of blood cake and increased the gelatinization degree of waxy rice. The water-holding capacity of porcine blood gel (blood/water=60/40, v/v), extent of absorption and gelatinization of waxy rice, and scanning electron microscopy showed that blood protein matrix and waxy rice are competitors for holding water in the cooking procedure. Non-haem iron content increased linearly (R=0.95) when heating temperature rose. The presence of blood proteins caused increasing of peak temperature (Tp) of gelatinization in differential scanning calorimetric thermal gram, The microstnlcture of plasma proteins and haemoglobin appeared continuous changes, and interacted with surface of waxy rice flour in terms of network and mosaic form, respectively. The electrophoretic patterns revealed an interaction between plasma proteins and waxy rice glutelin and haemoglobin when heated could be found at temperatures above $60^{\circ}C$.

Physical Properties on Waxy Black Rice and Waxy Rice (찰흑미와 일반찰벼의 물리적 특성)

  • Oh, Geum-Soon;Kim, Kwan;Park, Jong-Hoon;Kim, Sung-Kon;Na, Hwan-Sik
    • Korean Journal of Food Science and Technology
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    • v.34 no.2
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    • pp.339-342
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    • 2002
  • This study was comparised physical properties of waxy black rice and waxy rice. In case of physical properties of kernels, weight, length, length/width ratio and volume of waxy black rice were higher than those of waxy rice but width and density were very similar. Moisture gain of kernels of waxy black rices was increased continuously to 40 min. at various soaking temperatures ($20{\sim}50^{\circ}C$) and the water uptake rate constants ($k_0$) of waxy black rices during storage at $20{\sim}50^{\circ}C$ were also increased. The water uptake rate constant ($k_0$) of waxy rice ($0.058\;min^{-1/2}$) was the more fast than that of waxy black rice ($0.033\;min^{-1/2}$) during storage at $4^{\circ}C$. Also hardness reduced rate constant($-k_0$) of waxy rice ($0.048\;min^{-1}$) were the more fast than that of waxy black rice ($0.022\;min^{-1}$) about two times.

Effects of Alum on the Physicochemical properties (쌀전분의 이화학적 성질에 미치는 명반 첨가의 영향)

  • Lee, Shin-Young;Lee, Sang-Gui;Kim, Kwang-Joong;Kwon, Ik-Boo
    • Korean Journal of Food Science and Technology
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    • v.25 no.4
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    • pp.355-359
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    • 1993
  • The effects of alum un the physicochemical properties of non-waxy and waxy rice starches were investigated. The swelling powers of non-waxy and waxy rice starches with $0.05{\sim}1.0%(w/w)$ alum were increased remarkably in comparison with rice starches without alum, but those of rice starches with alum above 1.0%(w/w) concentration were decreased slowly with the increasing amount of alum. While solubility of the non-waxy starch with $0.05{\sim}1.0%(w/w)$ alum was elevated gradually with the increasing temperature. that of the waxy starch was decreased regardless temperature. But solubilities of both rice starches with alum concentration above 1.0%(w/w) exhibited no significant changes. The more alum in the system, the higher and the lower blue value were resulted in non-waxy rice starch and waxy rice starch, respectively. From amylograms, it was found that alum increased breakdown and initial pasting temperatures for both rice starches, but reduced setback.

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The Effect of Added Water Volume on the Textural Properties of Injulmi made from Waxy Rice Flours using Different Milling Methods (제분방법을 달리한 찹쌀가루로 만든 인절미의 텍스처 특성에 물 첨가량이 미치는 효과)

  • 김정옥;신말식
    • Korean Journal of Human Ecology
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    • v.5 no.2
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    • pp.33-43
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    • 2002
  • This study was investigated textural properties of Injulmi affected by milling methods, varieties and added water volume. Sinsunchalbyeo and Hwasunchalbyeo flours were made using Rin-dry milling(PDM) and roll-wet milling(RWM) methods. The proximate composition of waxy rice starches and waxy rice flours were similar. Water binding capacity, soluble carbohydrate and damaged starch of waxy rice flour by RWM: were higher than those of waxy rice flours by PDM. By increasing added water volume, hardness and adhesiveness of Injulmi were decreased. By increasing storage time, hardness of Injulmi was increased, but adhesiveness was decreased. The hardness of Injulmi made from waxy rice flours by PDM was higher than by RDW.

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