• Title/Summary/Keyword: comparison of lipid composition

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Comparison of Physicochemical Properties of Local Commercial Rice Brands (지역 브랜드 쌀의 이화학적 특성 비교)

  • Choi, Ok Ja;Jang, Won Yong;Song, Chi Young;Lee, Mi Young;Shim, Ki Hoon
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.46 no.11
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    • pp.1336-1342
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    • 2017
  • The study examined and compared the physicochemical and characteristics of various rice brand varieties and private brand products on the market. The moisture content in the proximate composition of rice was 15.67~17.03%, crude protein content was 5.73~6.30%, crude lipid content was 0.38~0.95%, and crude ash content was 0.23~0.56 %. Ilmi and Ilpum had high moisture content, whereas Gosihikkari and Hopyeong had high crude protein content. In the Hunter's color value of rice flour, L value was 96.76~97.27, a value was -1.63~-0.63, and b value was 2.00~2.60. The WAI was 1.21~1.39, WSI was 0.63~0.93%, and amylose content was 14.63~20.86%, respectively; Gosihikkari and Ilmi showed the lowest values. The X-ray diffraction patterns of rice flours of all varieties showed an A shape. For the amylogram properties of rice flour, initial pasting temperature was $59.57{\sim}63.23^{\circ}C$, maximum viscosity was 569.00~718.67 B.U. (Brabender Units), breakdown was 303.00~423.67 B.U., and setback was 212.67~265.33 B.U.. For differential scanning calorimeter (DSC) of rice flour, onset temperature was $54.66{\sim}58.63^{\circ}C$, peak temperature was $65.87{\sim}68.14^{\circ}C$, end temperature was $73.37{\sim}75.54^{\circ}C$, and enthalpy was 1.98~2.95 cal/g. The rice varieties with high internal density and initial pasting temperature as well as low crude protein content, WAI, amylose content, and setback can be classified as good. Gosihikkari in Gyeonggi Province, Ilmi and Hopyeong in Jeollanam-do, and Samgwang in Chungcheongnam-do are among them.

Comparison of the nutrient components of figs based on their cultivars (품종별 무화과의 영양성분 비교)

  • Na, Hwan Sik;Kim, Jin Young;Park, Hak Jae;Choi, Gyeong Cheol;Yang, Soo In;Lee, Ji Heon
    • Food Science and Preservation
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    • v.20 no.3
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    • pp.336-341
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    • 2013
  • In this study, the proximate compositions, minerals, free amino acids, total polyphenol and flavonoids of figs were analyzed according to their cultivars. The proximate compositions showed moisture at 85.37~87.28%, crude ash at 0.38~0.43%, crude lipid at 0.20~0.26%, crude protein at 0.39~0.81%, carbohydrate at 11.23~13.66% and crude fiber at 5.12~7.55% (dry base). The amount of the following minerals in the figs were highest, in this order: K > Ca > Mg > Na. The total polyphenol contents were highest in this order: Dauphine (198.91~261.64 mg/kg), Banane (211.07 mg/kg) and Horaish (169.90~174.33 mg/kg). The total flavonoid contents were highest in this order: Banane (84.52 mg/kg) > Dauphine (60.47~68.71 mg/kg) > Horaish (44.12~44.60 mg/kg). The quercetin contents were highest in this order: Dauphine, 2.40~3.54 mg/kg; Banane, 3.54 mg/kg; and Horaish, 2.40~2.75 mg/kg; but the flavonoid contents were lowest in this order: Dauphine, 1.11~1.16 mg/kg; Banane, 1.14 mg/kg; and Horaish, 1.09~1.11 mg/kg. The free amino acid content of the figs was 199.70~328.77 mg/100 g; their essential free amino acid contents, 46.45~67.46 mg/100 g; and their GABA (${\gamma}$-aminobutyric acid) contents, 13.57~26.69 mg/100 g.

Comparison of the Chemical Compositions of Korean and Chinese Safflower Flower(Carthamus tinctorius L.) (한국산과 중국산 홍화꽃의 화학적 성분조성비교)

  • 박금순;박어진
    • Korean journal of food and cookery science
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    • v.19 no.5
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    • pp.603-608
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    • 2003
  • In approximate composition, crude protein, lipid, ash, crude fiber, and N-free extract constituted 14.70%, 3.10%, 6.90%, 18.20%, and 57.10%, respectively, in Korean safflower flowers, compared to 12.60%, 2.70%, 5.80%, 16.40% and 62.50%, respectively, in Chinese safflower flowers. This indicated that Korean safflower flowers surpassed their Chinese counterparts except in terms of N-free extract. Free sugars such as fructose, glucose, and sucrose were proven to be dominant in both domestic and Chinese safflower flowers, while little xylose was contained. For content of polyphenolic compound, Korean safflower flowers contained 13.85% water soluble extract and 9.70% MeOH extract, compared to 9.39% and 7.04%, respectively, for the Chinese variety, confirming the higher levels in the Korean variety. For fatty acids, (Ed- the following results are not presented in ratio form) saturated fatty acids and unsaturated fatty acids comprised 6.80% and 93.20% in Korean safflower flowers and 16.0% and 84.0% in Chinese safflower flowers, respectively. Linoleic, oleic, and palmitoleic acids comprised 75.30%, 11.60%, and 3.40% in Korean safflower flowers, and 66.70%, 11.20%, and 6.10% in the Chinese variety, respectively. Of amino acids, essential amino acids comprised 46.67% in Korean safflower flowers and 36.79% in the Chinese variety. Moreover, total essential amino acids in Korean safflower flowers were higher than those of their counterparts. Non-essential amino acid comprised 65.17% in the Korean variety and 54.49% in the Chinese. In terms of mineral content, Korean safflower flowers contained more Ca, Cu, Fe and Mn than those of China, while Chinese safflower flowers contained more A1, Ba, Mg, K, Na, Zn, Sr and P.