• Title/Summary/Keyword: scented rice

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Inheritance of Scentedness of Rice Leaf in a Scented Breeding Line 'P-33-C-19' (향도의 방향성 유전)

  • 박순직
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.29 no.1
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    • pp.11-14
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    • 1984
  • The inheritance of scent in rice leaf and its genetic association with base color, hull color and resistance to bacterial leaf blight were studied in F$_2$ population of two rice crosses, P-33-C-19 (scented)/Zhu-Lian-Ai and P-33-C-19/Kataktara DA2. The scent was identified by leaf analysis at tillering stage. The scented and non-scented plants segregated in the ratio of 1scented: 3non-scented showing that a recessive gene responsible for the expression of scentedness. The scentedness was independently segregated with base color. hull color and resistance to bacterial leaf blight.

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Germination-Induced Changes in Flavoring Compound Profiles and Phytonutrient Contents in Scented Rice (향미벼의 발아 전 후 향기 성분 및 기능성 지질성분 함량의 변화)

  • Mahmud, MM Chayan;Das, Animesh Chandra;Lee, Seul-Ki;Kim, Tae-Hyeong;Oh, Yejin;Cho, Yoo-Hyun;Lee, Young-Sang
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.61 no.4
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    • pp.242-250
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    • 2016
  • Although rice has been cultivated as a major food crop for approximately 5,000 years, the interest of customers in 'scented rice' is a recent trend in the Korean market. As a part of developing a germinated scented rice variety, the newly bred scented rice variety 'Cheonjihyang-1 se' was germinated for 24 h, and changes in profiles of flavor-related volatiles, lipophilic phytonutrients, and fatty acids were investigated. The profiling of volatile compounds by using a headspace-gas chromatography-mass spectrometry (HS-GC-MS) revealed a total of 56 odor-active flavoring compounds; 52 at the pre-germination stage, 51 at the post-germination stage, and 47 common at both stages. The major flavoring compounds were nonanol and benzene, which constituted 11.5% and 6.6%, respectively, of the total peak area in pre-germinated rice, and 19.4% and 6.5%, respectively, in post-germinated rice. Germination induced an increase in 13 flavoring compounds, including 3,3,5-trimethylheptane and 1-pentadecene, which increased by 763 and 513%, respectively by germination. However, we observed a germination-induced decrease in most of the other flavoring compounds. Especially, the most important scented rice-specific popcorn-flavoring compound, 2-acetyl-1-pyrroline, showed 89% decrease due to germination. Furthermore, the germination of scented rice induced a decrease in the content of various phytonutrients. For example, the total contents of phytosterols, squalene, and tocols decreased from 207.97, 31.74, and $25.32{\mu}g\;g^{-1}$ at pre-germination stage down to 136.66, 25.12, and $17.76{\mu}g\;g^{-1}$, respectively at post-germination stage. The fatty acid compositions were also affected by germination. The composition of three major fatty acids, linoleic, oleic, and palmitic acids, increased from 36.6, 34.2, and 24.4%, respectively, at the pre-germination stage to 37.9, 36.9, and 20.7%, respectively, at the post-germination stage. All these results suggested significant changes in the flavor-related compounds and phytonutrients of the scented rice variety 'Cheonjihyang-1 se' during the process of germination, and subsequently the need for developing a more precise process of germination to enhance the flavor and nutritional quality of the germinated scented rice products.

Comparison Analysis of Aromatic Compounds in the Aromatic Rice Germplasm by Gas Chromatography and Mass Spectrometry (Gas Chromatography-Mass Spectrometry에 의한 향미 유전자원의 방향성 화합물 비교분석)

  • Kim, Jeong-Soon;Cho, Jum-Rae;Gwag, Jae-Gyun;Kim, Tae-San;Ahn, Sang-Nag;Lee, Sok-Young
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.54 no.1
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    • pp.88-103
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    • 2009
  • The volatile and semi-volatile compounds of 5 accessions of domestic scented and 25 accessions of introduced scented were extracted by solid phase microextraction (SPME) and analyzed by gas chromatographymass spectrum (GC-MS). A total of 156 volatile and semivolatile compounds were identified from 30 accessions of aromatic rice, including 32 alcohols, 25 acids, 25 ketones, 21 hydrocarbon, 18 esters, 16 aldehydes, 4 ethers, 5 amines, 2 phenols, 2 bases, and 8 miscellaneous compounds. By UPGMA/Neighbor-join tree analysis, the thirty accessions of aromatic rice could be classified into seven groups according to the major odor or aroma compounds. Group I included indica type of Basmati varieties. Group II and Group IV included japonica type introduced scented. Group III consisted only Hyangmibyeo1ho in domestic scented. Group V and Group VII included indica type of Basmati and non-Basmati varities. Group VI included four of domestic scented of seven accessions excepted Basmati6129, Basmati 6311, and Seratus Malam.

Antioxidative and Hepatoprotective Activity of Colured-Scented and Korean Native Rice Varieties Based on Different Layers (특수 유색미, 향류미 및 한국 재래종 벼 종자의 층위별 항산화 및 간보호 활성)

  • 박희준;곽태순;정원태;최종원
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.1
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    • pp.191-198
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    • 1999
  • Fifteen varieties of Oryza sativa mainly including those of Korean native rice were exactly cutted into three layers such as L1 layer(the outer part of 92% from rice center), L2 layer(the part of 81∼91% from the rice center) and L3 layer(the inner part of 80% from the rice center) We biologically evaluated the antioxidative effect on the every layer(L1, L2 and L3) of all the varieties, by observing malondialdehyde (MDA) produced by galactosamine in the mouse. L1 layer of some varieties showed significant antiox idative effect, while L2 and L3 layer didn't show the activity. It was also suggested that coloured rice(Suwon 425 and Sanggaehangbyeolna) showed stronger activity than other general rices, probably due to high contents of anthocyanins. Successively, we evaluated antihepatotoxic effect, based on the determination of serum ALT and AST activity. Some varieties of only L1 layer, except for L2 and L3 layer, significantly decreased the serum ALT and AST activity. This finding indicate that oral diet of some raw rice are able to protect hepatotoxicities. Among all the samples tested, L1 layer of Suwon 425 showed the strongest antihepatotoxic effect. From quantitative analysis on ferulic acid derivatives, it was found that the more it enters from the surface into the rice center, the more those secondary metabolites contents were highly reduced. These findings above suggested that Suwon 425 could be a promising candidate for the development of health rice food.

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