• 한국작물학회지
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• 제51권2호
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• pp.173-178
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• 2006

Anthocyanin in blackish purple rice is composed of cyanidin, peonidin, malvidin, pelargonidin and delphinidin flavylium ion and their glucosides, which shows antioxidant activity similar to a-tocoperol. It has been demonstrated that cyanidin-3-glucoside(C3G) of anthocyanin has a high-potency antioxidant activity, and is a prominent in anticancer and antithrombotic activity. In analysis of content of anthocyanin from the genetic source of blackish purple rice, the level of C3G was approximately 80% of total contents of anthocyanins, and showed the highest content in Heugjinjubyeo, of which contains an amount of 500 mg by weight of 100g brown rice in comparison that most of varieties has less than 50mg by weight of 100g brown rice. We found that C3G pigment in blackish purple rice was considerably affected by cultural season, cultivation area, ripening temperature, and weather condition, etc. as well as genetic properties. In cross combination between Heugjinjubyeo and Suwon425, intermediate parent $F_9$ generation which was three times higher or more in C3G content than that of Heugjinjubyeo was bred, of which it contained an amount of 1678 mg by weight of 100g brown rice, and we called it 'C3GHi' Rice. And, we found that the C3GHi rice was more excellent than that of the existing Heugjinjubyeo in anticancer and antithrombotic activity. Methanol extract from Heugjinjubyeo was fractionated by organic solvents in order of n-hexane, $CH_{2}Cl_2$ and n-BuOH, and then oryzafuran, quercetin, vanillic acid and protocatechuic acid and their structures from the n-BuOH fraction were ascertained. Oryzafuran of these compounds was a natural compound found firstly in nature. Quercetin and protocatechuic acid besides new compound oryzafuran showed excellent antioxidant ability to vitamin C. These results suggest that blackish purple rice has very high value as a source of various functional food as well as staple food.

• Bulletin of the Korean Chemical Society
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• 제30권3호
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• pp.739-741
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• 2009

• Preventive Nutrition and Food Science
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• 제13권4호
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• pp.276-280
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• 2008

Oryza sativa cv. Heugjinjubyeo, an anthocyanin-pigmented rice variety, is well known to contain high levels of bioactive phytochemicals, anthocyanin, quinolone alkaloids and phenolic acids. Here, we studied the inhibitory effect of Oryza sativa cv. Heugjinjubyeo bran on the absorption of dietary fat in streptozotocin-induced diabetic Sprague-Dawley male rats. For these experiments, experimental animals were divided into four groups: normal, diabetic-control and two experimental groups that were fed 1.0 g or 2.0 g/kg body weight/day of Oryza sativa cv. Heugjinjubyeo bran supplement for 14 days. As a result, liver glycogen levels increased significantly by 65% and 32% in groups receiving 1.0 g and 2.0 g/kg body weight/day, respectively, compared to diabetic-control. Liver cholesterol levels were significantly lower by 8.3% and 14.5% in the groups fed 1.0 g and 2.0 g of anthocyanin- pigmented rice extracts, respectively.

• 한국육종학회지
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• 제40권1호
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• pp.22-25
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• 2008

The anti-allergic effect of C3GHi rice breeded from the cross of 'Heugjinjubyeo' and 'Suwon 415' was investigated. Antiscratching behavioral effects of the water extract of C3GHi was higher than Heugjinjubyeo. Orally administered BCRs' extracts exhibited potent inhibitory activity against scratching behaviors which were induced by compound 48/80. The inhibitory effect of C3GHi against the passive cutaneous reaction was more potent than that of Heugjinjubyeo. These finding suggest that black colored rice, especially C3GHi, may inhibit scratching behaviors and passive cutaneous reaction, and its anti-allergic activities were increased by means of selecting high C3G rice seeds.

• 한국작물학회지
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• 제45권6호
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• pp.370-373
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• 2000

흑진주벼 색소 분획의 급성독성 시험을 하기 위하여 ICR계 생쥐 각 암수 6마리를 1주일 이상 순화시킨 다음 경구투여를 실시하여 14일 동안 급성독성 평가를 한 결과는 다음과 같다. 1. 색소추출물의 급성독성 실험에서 생쥐의 암수 모두 9000mg/kg의 대량 경구 용량에서도 사용한 6마리가 모두 사망하지 않았다. 2 1000, 3000 및 9000mg/kg 경구 용량에서 14일간 측정한 체중변화는 대조군과 유의성 있는 변화가 없었고 증상의 이상도 보이지 않았다. 3. 경구 용량 시험의 부검결과 대조군과 유의성 있는 체중변화와 다른 증상의 이상이 관찰되지 않아서 안정성이 높은 물질로 확인되었다.

• 한국작물학회지
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• 제44권3호
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• pp.181-185
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• 1999

To compare the composition of volatile flavor components of three different cultivars of rice, Hyangnambyeo (aromatic cultivar), Heugjinjubyeo (pigmented cultivar) and Dongjinbyeo (normal cultivar), the volatile flavor components of brown rice were isolated by Likens-Nickerson simultaneous steam distillation and extraction apparatus. The flavor concentrates obtained were analyzed by gas chromatography and gas chromatography-mass spectrometry. A total of 65 components, including 14 aliphatic aldehydes and ketones, 7 aliphatic alcohols, 8 aromatic alcohols, 13 hydrocarbons, 9 esters, 7 aliphatic acids, and 7 miscellaneous components were identified. The aliphatic aldehydes, which are known as contributors to the overall flavor of cooked rice, were present in larger amounts in Hyangnambyeo than in Heugjinjubyeo and Dongjinbyeo, while the difference in quantity of these components between Heugjinjubyeo and Dongjinbyeo was not remarkable. Hyangnambyeo and Heugjinjubeyo contained 562 ng and 259 ng of 2-acetyl-1-pyrroline per gram of brown rice based on dry weight, respectively, which is a key compound contributing to the popcorn-like aroma in aromatic rice. Dongjinbeyo contained about 6 ng.

• 한국작물학회지
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• 제47권1호
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• pp.54-61
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• 2002

The antioxidant activities of methanol extracts of sixteen samples were tested using 1.1-diphenyl-2-picryl hydrazyl(DPPH) reactivity and TBARS substances assay in vitro. The methanol extracts of the rice brans from three wild rice -O. minuta, O. rufipogon, and O. barthii-were found to be the most effective in DPPH radical scavenging activity. The next effective ones were the rice brans of Heugjinjubyeo and leaves of Tapgolbori. When tested on lipid peroxidation using a lipid peroxidation generation system mediated by $H_2O$$_2$/Fe$^{2+}$ in rat liver homogenates, the brans and hull of wild rice (O. minuta, O. rufipogon, and O. barthii) and rice bran of Heugjinjubyeo exhibited protective activities against lipid peroxidation in the order of effectiveness.s.

• Natural Product Sciences
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• 제13권4호
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• pp.373-377
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• 2007

Antiscratching behavioral effects of the water extract of two black colored rice (BCR) varieties [Oryza sativa L. cv. Heugjinjubyeo (HJ) and Josaengheugchalbyeo (JH)], major pigment of which is cyanindin 3-glucoside, were investigated. Orally administered BCRs' extracts exhibited potent inhibitory activity against scratching behaviors which were induced by compound 48/80 and histamine. The inhibitory effect of Josaengheugchalbyeo in vivo and in vitro were more potent than those of Heugjinjubyeo. These finding suggest that black colored rice, especially Josaengheugchalbyeo, may inhibit scratching behaviors and anaphylaxis reaction by stabilizing membrane.

• 한국육종학회지
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• 제43권3호
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• pp.196-200
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• 2011

'슈퍼자미'는 한국방송통신대학교 농학과에서 2009년도에 육성한 C3G 고함유 흑자색 품종으로 주요특성과 수량성을 요약하면 다음과 같다. 1. 중부평야지 평균 출수기는 8월 25일로 만생종이며, 간장은 75 cm 정도이고, 종피색이 흑자색인 유색메벼 품종이다. 2. 현미천립중은 26.2 g 정도이고, 장폭비는 1.87로 단원형이며, 종피는 흑자색으로 안토시아닌 주색소인 C3G 함량이 '흑진주벼'의 10배 수준으로 색택이 균일한 품종이다. 3. 중부평야지역 보통기 보비재배 2개소에서 평균 629.7 kg/10a 수준으로 '흑진주벼'의 162% 수준이다.

• 한국작물학회지
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• 제49권spc1호
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• pp.90-96
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• 2004