中国农业科学
中國農業科學
중국농업과학
SCIENTIA AGRICULTURA SINICA
2015年
9期
1718-1726
,共9页
张娜%王国祥%Abacar Jose Daniel%刘正辉%丁承强%唐设%李刚华%王绍华%丁艳锋
張娜%王國祥%Abacar Jose Daniel%劉正輝%丁承彊%唐設%李剛華%王紹華%丁豔鋒
장나%왕국상%Abacar Jose Daniel%류정휘%정승강%당설%리강화%왕소화%정염봉
酚酸%超高效液相色谱%糙米%精米
酚痠%超高效液相色譜%糙米%精米
분산%초고효액상색보%조미%정미
phenolic acids%ultra-high performance liquid chromatography%brown rice%milled rice
【目的】稻米酚酸化合物是天然抗氧化物的重要来源,本研究建立糙米和精米中酚酸化合物的超高效液相色谱的定性定量方法,并分析其在籽粒中的分布特征。【方法】以没食子酸、原儿茶酸、龙胆酸、对羟基苯甲酸、绿原酸、香草酸、咖啡酸、丁香酸、对香豆酸、阿魏酸、芥子酸、异阿魏酸、2-羟基肉桂酸和反式肉桂酸14种酚酸化合物标准品,对糙米和精米中酚酸进行定性和定量分析。色谱柱为Agilent ZORBAX Eclipse Plus C18(2.1 mm×50 mm,1.8μm-Micron),流动相为0.1%乙酸水溶液(A)/乙腈(B),柱温30℃,流速为0.5 mL·min-1,采用梯度洗脱,洗脱程序为0—1 min,8%—10%B;1—2.5 min,10%—13%B;2.5—5.5 min,13%B;5.5—6 min,13%—21%B ;6—6.5 min,21%—27%B;6.5—7.5 min,27%—50%B;7.5—9 min,50%—100%B;9—12 min,100%B;12—12.5 min,100%—8%B。检测波长为280和325 nm。【结果】14种酚酸在8 min内完全分离,经质谱鉴定,精米及糙米中检测出的物质共有11种,分别是没食子酸、龙胆酸、对羟基苯甲酸、香草酸、咖啡酸、丁香酸、对香豆酸、阿魏酸、芥子酸、异阿魏酸和反式肉桂酸。可进行定量分析的酚酸共8种,分别是对羟基苯甲酸、香草酸、丁香酸、对香豆酸、阿魏酸、芥子酸、异阿魏酸和反式肉桂酸,线性范围为5—220μg·mL-1(R2=0.9994—0.9999),检出限为0.002—0.03μg·mL-1,定量限为0.004—0.08μg·mL-1,回收率为84.11%—114.43%。对羟基苯甲酸、香草酸、丁香酸、对香豆酸、阿魏酸、芥子酸、异阿魏酸和反式肉桂酸在精米和糙米中的含量差异显著,其中对羟基苯甲酸、香草酸、丁香酸、对香豆酸、阿魏酸、芥子酸和反式肉桂酸集中存在于胚乳外层中,精米/糙米含量百分比变幅为4.52%—16.73%。而异阿魏酸在稻米籽粒中分布较均匀,其精米/糙米含量百分比达到45.86%。【结论】该方法简便、快速、准确、可靠,不仅适合稻米中酚酸化合物的含量测定,而且对于其他谷物中酚酸化合物含量的测定也具有一定参考价值。
【目的】稻米酚痠化閤物是天然抗氧化物的重要來源,本研究建立糙米和精米中酚痠化閤物的超高效液相色譜的定性定量方法,併分析其在籽粒中的分佈特徵。【方法】以沒食子痠、原兒茶痠、龍膽痠、對羥基苯甲痠、綠原痠、香草痠、咖啡痠、丁香痠、對香豆痠、阿魏痠、芥子痠、異阿魏痠、2-羥基肉桂痠和反式肉桂痠14種酚痠化閤物標準品,對糙米和精米中酚痠進行定性和定量分析。色譜柱為Agilent ZORBAX Eclipse Plus C18(2.1 mm×50 mm,1.8μm-Micron),流動相為0.1%乙痠水溶液(A)/乙腈(B),柱溫30℃,流速為0.5 mL·min-1,採用梯度洗脫,洗脫程序為0—1 min,8%—10%B;1—2.5 min,10%—13%B;2.5—5.5 min,13%B;5.5—6 min,13%—21%B ;6—6.5 min,21%—27%B;6.5—7.5 min,27%—50%B;7.5—9 min,50%—100%B;9—12 min,100%B;12—12.5 min,100%—8%B。檢測波長為280和325 nm。【結果】14種酚痠在8 min內完全分離,經質譜鑒定,精米及糙米中檢測齣的物質共有11種,分彆是沒食子痠、龍膽痠、對羥基苯甲痠、香草痠、咖啡痠、丁香痠、對香豆痠、阿魏痠、芥子痠、異阿魏痠和反式肉桂痠。可進行定量分析的酚痠共8種,分彆是對羥基苯甲痠、香草痠、丁香痠、對香豆痠、阿魏痠、芥子痠、異阿魏痠和反式肉桂痠,線性範圍為5—220μg·mL-1(R2=0.9994—0.9999),檢齣限為0.002—0.03μg·mL-1,定量限為0.004—0.08μg·mL-1,迴收率為84.11%—114.43%。對羥基苯甲痠、香草痠、丁香痠、對香豆痠、阿魏痠、芥子痠、異阿魏痠和反式肉桂痠在精米和糙米中的含量差異顯著,其中對羥基苯甲痠、香草痠、丁香痠、對香豆痠、阿魏痠、芥子痠和反式肉桂痠集中存在于胚乳外層中,精米/糙米含量百分比變幅為4.52%—16.73%。而異阿魏痠在稻米籽粒中分佈較均勻,其精米/糙米含量百分比達到45.86%。【結論】該方法簡便、快速、準確、可靠,不僅適閤稻米中酚痠化閤物的含量測定,而且對于其他穀物中酚痠化閤物含量的測定也具有一定參攷價值。
【목적】도미분산화합물시천연항양화물적중요래원,본연구건립조미화정미중분산화합물적초고효액상색보적정성정량방법,병분석기재자립중적분포특정。【방법】이몰식자산、원인다산、룡담산、대간기분갑산、록원산、향초산、가배산、정향산、대향두산、아위산、개자산、이아위산、2-간기육계산화반식육계산14충분산화합물표준품,대조미화정미중분산진행정성화정량분석。색보주위Agilent ZORBAX Eclipse Plus C18(2.1 mm×50 mm,1.8μm-Micron),류동상위0.1%을산수용액(A)/을정(B),주온30℃,류속위0.5 mL·min-1,채용제도세탈,세탈정서위0—1 min,8%—10%B;1—2.5 min,10%—13%B;2.5—5.5 min,13%B;5.5—6 min,13%—21%B ;6—6.5 min,21%—27%B;6.5—7.5 min,27%—50%B;7.5—9 min,50%—100%B;9—12 min,100%B;12—12.5 min,100%—8%B。검측파장위280화325 nm。【결과】14충분산재8 min내완전분리,경질보감정,정미급조미중검측출적물질공유11충,분별시몰식자산、룡담산、대간기분갑산、향초산、가배산、정향산、대향두산、아위산、개자산、이아위산화반식육계산。가진행정량분석적분산공8충,분별시대간기분갑산、향초산、정향산、대향두산、아위산、개자산、이아위산화반식육계산,선성범위위5—220μg·mL-1(R2=0.9994—0.9999),검출한위0.002—0.03μg·mL-1,정량한위0.004—0.08μg·mL-1,회수솔위84.11%—114.43%。대간기분갑산、향초산、정향산、대향두산、아위산、개자산、이아위산화반식육계산재정미화조미중적함량차이현저,기중대간기분갑산、향초산、정향산、대향두산、아위산、개자산화반식육계산집중존재우배유외층중,정미/조미함량백분비변폭위4.52%—16.73%。이이아위산재도미자립중분포교균균,기정미/조미함량백분비체도45.86%。【결론】해방법간편、쾌속、준학、가고,불부괄합도미중분산화합물적함량측정,이차대우기타곡물중분산화합물함량적측정야구유일정삼고개치。
Objective] Phenolic acids in rice grain are the main source for natural antioxidants. This study aims to develop an ultra-high performance liquid chromatography method for the determination of phenolic acids in brown rice and milled rice, and analyze the tissue distribution of phenolic acids in rice grain.[Method]Standard compounds of the target phenolic acids, including gallic acid, protocatechuic acid, gentisic acid, 2,5-dihydroxybenzoic acid, 4-hydroxybenzoic acid, chlorogenic acid, vanillic acid, caffeic acid, syringic acid,ρ-coumaric acid, ferulic acid, sinapic acid, isoferulic acid, 2-hydroxycinnamic acid, and trans-cinnamic acid, were purchased from Sigma-Aldrich. The liquid-chromatographic separation was performed on Agilent ZORBAX Eclipse Plus C18 (2.1 mm×50 mm, 1.8μm-Micron) column kept at 30℃, using acetonitrile/acetic acid/water mixture as the mobile phase with a flow rate of 0.5 mL·min-1 through gradient elution: 0-1 min, 8%-10%B; 1-2.5 min, 10%-13%B; 2.5-5.5 min, 13%B; 5.5-6 min, 13%-21%B; 6-6.5 min, 21%-27%B; 6.5-7.5 min, 27%-50%B; 7.5-9 min, 50%-100%B; 9-12 min, 100%B; 12-12.5 min, 100%-8%B. And the detection wavelength was set at 280 nm and 325 nm.[Result] Results showed that a good separation of 14 phenolic acids was achieved within 8 min. Eleven phenolic acids were detected in brown and milled rice by mass spectrometry including gallic acid, gentisic acid, 4-hydroxybenzoic acid, vanillic acid, syringic acid,ρ-coumaric acid, ferulic acid, sinapic acid, isoferulic acid, trans-cinnamic acid. With eight of them can be used for quantitative analysis, including 4-hydroxybenzoic acid, vanillic acid, syringic acid,ρ-coumaric acid, ferulic acid, sinapic acid, isoferulic acid, trans-cinnamic acid. The proposed method exhibited a linear range of 5-220μg·mL-1(R2=0.9994-0.9999), with limits of quantification ranging from 0.002 to 0.03μg·mL-1, recovery rates from 84.11% to 114.43%. A significant difference existed in the distribution of 4-hydroxybenzoic acid, vanillic acid, syringic acid,ρ-coumaric acid, ferulic acid, sinapic acid, isoferulic acid, trans-cinnamic acid between brown (B) and milled rice (M). With 4-hydroxybenzoic acid, vanillic acid, syringic acid,ρ-coumaric acid, ferulic acid, sinapic acid, trans-cinnamic acid mainly concentrated in the outer endosperm, and the ratio of M to B was 4.52%-16.72%. By contrast, a considerable part of isoferulic acid accumulated in the endosperm, having a M/B value of 45.86%.[Conclusion] It was proved that the proposed method is simple, rapid, accurate, reliability, and should be used for the determination of phenolic acids in rice grain as well as other cereal grains.