• Title/Summary/Keyword: rice starch

Search Result 206, Processing Time 0.116 seconds

Effects of Rice Starch Addition on Quality of Instant Fried Noodles (쌀 전분의 첨가가 즉석 유탕면의 품질특성에 미치는 영향)

  • Cho, Yong-Hwa;Lim, Seung-Taik;Lee, Young-Tack
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.43 no.8
    • /
    • pp.1264-1269
    • /
    • 2014
  • This study investigated the effects of rice starch addition, including native, acetylated, and hydroxypropy-lated rice starch, on the quality characteristics of instant fried noodles. Compared to 100% wheat flour (control), flours containing acetylated or hydroxypropylated rice starch showed reduced initial pasting temperatures as well as peak and breakdown viscosities as determined using a Rapid Visco-Analyzer (RVA). The addition of acetylated and hydroxylated rice starch as well as native rice starch increased cooked weight, volume, and water absorption of the fried noodles compared to control noodles. The addition of native rice starch tended to increase softness of noodles, whereas addition of acetylated or hydroxypropylated rice starch significantly lowered hardness, gumminess, and chewiness values. The results of the sensory evaluation indicate that noodles containing rice starch showed improved sensory characteristics such as color, appearance, flavor, taste, and texture. Especially, acetylated rice starch could be used to improve eating quality of instant fried noodles.

Physicochemical Properties of Phosphorylated Rice Starch (인산 쌀 전분의 이화학적 특성)

  • 정재홍;이미현;오만진
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.23 no.2
    • /
    • pp.244-250
    • /
    • 1994
  • Starch phosphates were prepared by dry heating method using sodium triphosphate as a substitution reagent and their physicochemical properties were investigated with the chucheongbyeo and samkangbyeo. The solubility and swelling power of rice starches were increased by phosphorylation reaction. The solubility of the chucheongbyeo was greater than that of samkangbyeo , but the swelling power was appeared in vice versa. The transparency of raw starch was increased at the 6$0^{\circ}C$, but phosphorylated rice starch was begun to increase from 5$0^{\circ}C$. Light transmittance was higher inthe phosphorylate drice starch. The lightness of phosphyorylated rice starch decreased more than that of raw starch. Whereas the yellowness of phosphorylated rice starch increased. The temperature of initial gelatinization of the phosphorylated chucheong and samkang rice starch was shown to 5$0^{\circ}C$ and 53$^{\circ}C$, respectively. lowering 14-15$^{\circ}C$ in temperatureby the phosphorylation . The viscosity as well as by the phosphorylation reaction was raised 7.4-8.4 times, respectively. The hardness, adhesiveness, cohesiveness and texture which is rheological properties of starch gel increased by the phosphoryulation reaction. The chucheong rice starch gel was slightly higher in its rheolgocial values thanthat of the samkang rice starch gel. The rice starch particles were shown to polygonal structure, but they were deformed in the phosphorylated starch.

  • PDF

The Effect of Dietary Ultra Finely Pulverized Rice Starch on Growth Performance and Development of Small Intestine (초미세 분쇄 쌀전분의 섭취가 성장기 Sprague-Dawley 흰쥐의 성장 및 장세포 발달에 미치는 영향)

  • Park, Jin-Hee;Kim, Myung-Hwan;Chang, Moon-Jeong
    • Journal of the Korean Society of Food Culture
    • /
    • v.22 no.5
    • /
    • pp.645-651
    • /
    • 2007
  • Male weanling Sprague Dawley rats were used to evaluate the effect of dietary rice starch with different particle size on growth performance, intestinal function and proliferation. There were two dietary treatment: rice starch (RS), ultra finely pulverized rice starch with less than $15{\mu}m$ size (PRS). They were eight rats per treatment. In vitro digestibility, body weight change and organs weight were evaluated. Serum GPT, GOT and blood urea nitrogen were analyzed. Transit time, short chain fatty acid contents of cecum, and cell proliferation of duodenum and jejunum were measured. In vitro digestibility of PRS was higher than that of RS. Rats fed ultra finely pulverized rice starch for 3 weeks grew faster than rats fed rice starch. PRS group has higher weights of liver, kidney, spleen and epididymal fat pad, perhaps as a result of increased digestibility. GPT and GOT were not different between two groups. Blood urea nitrogen was higher in RS-fed rats than that of PRS-fed rats. Feeding ultra finely pulverized rice starch resulted in a proliferation of duodenum significantly. These results suggest that ultra finely pulverized rice starch increases the growth performance in weanling animals with reduced number of cells in the cell cycle of small intestine.

Comparative Growth Performance and Physiological Function of Physically Modified Rice Starch and Gelatinized Rice Starch in Growing Rats (물리적 변성 쌀전분과 호화 쌀전분의 생리적 효과 비교연구: 성장 능력과 장기의 생리적 기능)

  • Chang, Moon-Jeong;Kim, Myung-Hwan
    • Journal of the Korean Society of Food Culture
    • /
    • v.18 no.6
    • /
    • pp.592-600
    • /
    • 2003
  • Male rats were fed a purified diet containing one of 3 experimental diets, gelatinized rice starch that was not modified physically (RC), gelatinized physically modified rice starch using ultrasonic homogenizer(RU), gelatinized physically modified rice starch using hydroshear homogenizer(RH) during 28 days. RC was used as the rice starch control. Feeding a physically modified rice starch (RU) caused an increase in liver weight and RH increased RNA and protein contents in kidney significantly although there were no differences in food intakes compared to feeding a RC diet. The wet weight of liver, kidney and heart were higher in RU. The wet weights of fecal output of the rats fed RH was greater than in rice control group. The gut transit time was longer in the rats fed RH than in the rice control group significantly. Serum GOT, GPT, total bilirubin concentration were tended to be lower and blood urea nitrogen was significantly lower in RH group. The maturation index of kidney was higher in RU than in RC. These results suggest that physically modified rice starch improved growth performance and physiological functions in organs of growing rats.

Investigation of Physical Property Change in Modified Rice Starch by Ultra Fine Pulverization (초미세분쇄를 이용한 쌀 변성전분의 물리적 특성 변화구명)

  • Han, Myung-Ryun;Chang, Moon-Jeong;Kim, Myung-Hwan
    • Applied Biological Chemistry
    • /
    • v.50 no.3
    • /
    • pp.160-166
    • /
    • 2007
  • This study was performed to analyze the molecular structural and physical properties changes of modified rice starch, which particle structure was broken using high impact planetary mill and ultra fine pulverizing techniques. The average diameter and specific surface area of rice starch after pulverization decreased 20% and increased 25%, respectively. Low molecular substances content in rice starch using GPC (gel permeation chromatography) increased from 36.5% to 59.5% after pulverizing of rice starch. Damaged starch contents in rice starch also increased from 16.4% to 99.2% after pulverizing of rice starch. Water holding capacity, solubility and transmittance of rice starch after pulverization increased compared to those of control. Apparent viscosity value of rice starch after pulverization decreased to 7% in control based on $30^{\circ}C$ and 20 RPM conditions.

Characteristics of non-waxy rice starch/gum mixture gels (멥쌀 전분과 검물질 혼합물 겔의 특성)

  • Shin Malshick;Kwon Ji-Young;Song Ji-Young
    • Korean journal of food and cookery science
    • /
    • v.21 no.6
    • /
    • pp.942-949
    • /
    • 2005
  • To improve the textural properties and stabilize the structure and gel matrix of non-waxy rice starch gels, non-waxy rice starch/gum mixture gels were prepared from various food gums, gum arabic, guar, algin, deacyl gellan, xanthan and gellan gums. The morphological and textural properties and freeze-thaw stability of their gels were compared. Rice starch/gum mixture gels with various gums formed a more homogeneous gel matrix with smaller particle size than rice starch gel without Em, but the trends differed depending on the gum types. The textural properties of rice starch/gum mixture gels were changed with the gum types. The shape of the rice starch/gum mixture gel matrix was desirable when mixed with gellan and algin. The textural properties of gels hardened in the rice starch/algin mixture gel and softened in the rice starch/algin mixture gel. The rice starch gels showed V-type crystallinity by x-ray diffractometer, but the peak at $2\theta$ = $20^{o}$ was decreased with increasing gum addition. The freeze-thaw stability increased with increasing gum addition. Gellan and algin were especially effective.

Physicochemical Properties of Physically Modified Rice Starch by Homogenizer (균질기를 이용한 물리적 변성 쌀 전분의 이화학적 특성)

  • Han, Myung-Ryun;Kim, Myung-Hwan
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.34 no.5
    • /
    • pp.700-706
    • /
    • 2005
  • The objectives of this research were to analyze physicochemical properties of physically modified rice starch which was prepared by hydro-shear homogenizer and ultrasonic homogenizer. The 5:1 of water to starch ratio, 20,500 rpm of hydro-shear homogenizer, and 5 sec of pulse and 40 kHz of frequency of ultrasonic homogenizer, which were operated for 10 min. The 1/3 of size reduction of raw rice starch and gelatinized rice starch, and reduced of particle size were achieved by above processing conditions. The homogenization of raw rice starch and gelatinized rice starch were higher values of specific area, transmittance, solubility and swelling power than control. While, these had lower value of apparent viscosity than control. In raw rice starch, the gelatinization characteristics of ultrasonic homogenizer treated rice starch had some higher values of gelatinization temperature, peak temperature and enthalpy than those of control. While, those of hydro-shear homogenizer treated rice starch had similar values to those of control.

Structure of Hot-Water Soluble Rice Starch in Relation to the Structure of Rice Starch and Texture of Cooked Rice (열수 가용성 쌀 전분의 구조와 전분의 구조 및 밥의 텍스쳐와의 관련성)

  • Kang, Kil-Jin;Kim, Kwan;Kim, Sung-Kon
    • Korean Journal of Food Science and Technology
    • /
    • v.27 no.5
    • /
    • pp.757-761
    • /
    • 1995
  • The relationship between the molecular structure of rice starch and the texture of cooked rice was investigated using hot-water soluble rice starch. The structure of hot-water soluble starch bound amylose which was composed of small molecular weight and amylopectin which was composed of chain length of $\overline{DP}\;10{\sim}20$, and the average composition of amylose : amylopectin was 7 : 3. The molecular weight of amylose was the smaller and super long chain of amylopectin was the fewer, the extractable ratio of hot-water soluble rice starch was the higher. And hot-water solubility of rice starch be responsible for molecular structure of starch. On the texture of cooked rice, the extractable ratio of hot-water soluble rice starch was the higher, the hardness was the lower and the adhesiveness was the higher. The results suggest that the molecular structure of rice starch could be responsible for the texture of cooked rice.

  • PDF

Effect of Phosphate on Rheological Properties of Gelatinized Rice Starch Solution (인산염이 쌀 전분 호화액의 리올로지에 미치는 영향)

  • Kim, Il-Hwan;Kim, Sung-Kun;Lee, Shin-Young
    • Korean Journal of Food Science and Technology
    • /
    • v.19 no.4
    • /
    • pp.366-370
    • /
    • 1987
  • Rheological properties of gelatinized rice starch solutions (5%) were examined with a Brookifield viscometer. Gelatinized rice starch solutions showed pseudoplastic flow having yield stress, i.e., Binghamplastic flow behavior. The yield stress of gelatinized rice starch solutions was reduced by the phosphate. Phosphate increased the pseudoplasticity of gelatinized nonwaxy rice starch solutions. but decreased that of gelatinized waxy rice starch solution. The yield stress of gelatinized nonwaxy rice starch solutions held for one hour at $90^{\circ}C$ was slightly decreased, but that of waxy starch solution was reduced by 10-fold. Phosphate reduced the yield stress for both gelatinized nonwaxy and waxy rice starch solutions. Phosphate decreased the consistency index, but did not affect the flow behavior index of the gelatinized rice starch solutions.

  • PDF

Effect of annealing treatment on gelatinization of upland and lowland waxy brown rice starches (아닐링 처리가 밭벼와 논벼 찹쌀 전분의 호화에 미치는 영향)

  • Kim, Sung-Kon
    • Applied Biological Chemistry
    • /
    • v.34 no.2
    • /
    • pp.187-189
    • /
    • 1991
  • Gelatinization temperatures of upland and lowland waxy brown rice starches annealed at $25^{\circ}C$ and $60^{\circ}C$ for 24hr were investigated with differential scanning calorimetry No annealing effect was observed at low temperature. The upland rice starch showed narrower range of gelatinization temperature upon annealing treatment at $60\circ}C$ compared with the lowland rice starch. The enthalpy of gelatinization was not changed in case of the upland rice starch but was increased in case of the lowland one upon annealing.

  • PDF