【正文】
遷移溫度和遷移時(shí)間的關(guān)系圖 (純水) 本實(shí)驗(yàn) 選擇中性食品模擬物(純凈水)和酒精類(lèi)食品模擬物( 10%乙醇 水)進(jìn)行遷移實(shí)驗(yàn) 。 表 2. BP 和 4MBP 的線(xiàn)性范圍、線(xiàn)性方程、相關(guān)系數(shù)、檢出限 化合物 線(xiàn)性范圍( 181。g/L) (純水) 樣品 編號(hào) 1 2 3 4 5 6 7 8 9 10 BP 4MBP ND ND ND ND 總量 注: ND 表示未檢測(cè)出 河北大學(xué) 2020屆本科生畢業(yè)論文 10 表 5. 10 種食品包裝樣品中 PIs 的溶出量(單位 : 181。ESI / MS and HPTLCDART / MS[J] . Analytical And Bioanalytical Chemistry, 2020, 385(3): 586~ 595 [7] 王紅松,陳明,湯禮軍等 . 高效液相色譜法同時(shí)測(cè)定食品包裝水性模擬液中二苯甲酮和 4甲基二苯甲酮 [J]. 中國(guó)衛(wèi)生檢驗(yàn)雜志 , 2020, 21(2): 272~ 276 [8] Constituents of Printing Inks in Beverages from Cartons. BFR Expert Opinion , 25 November 2020 [9] Conclusions of the Meeting of 06 March 2020,Standing Committee on the Food Chain and Animal Health, Section Toxicological Safety. European Commission Health and Consumers DirectorateGeneral, Brussels, 06 March 2020 [10] 王敏,郭德華,丁卓平 . 食品中雜環(huán)胺檢測(cè)的分析方法 [J]. 現(xiàn)代科學(xué)儀器 , 2020,( 6): 145~153 [11] 鄧曉軍 ,郭德華 ,李波等 . 氣相色譜 2 質(zhì)譜法測(cè)定乳制品中光引發(fā)劑異丙基硫雜蒽酮的殘留量[J]. 2020, 25(1): 39~ 42 [12] 李中皓,唐綱嶺,王慶華等 . 超高效液相色譜法測(cè)定卷煙包裝紙中的二苯甲酮和 4甲基二苯甲酮 [J]. 現(xiàn)代食品科技 , 2020, 27(10): 1276~ 1280 [13] 羅輝甲 ,曹?chē)?guó)榮 ,許文才 . 食品包裝材料中雙酚 A 檢測(cè)與分析方法的研究進(jìn)展 [J]. 包裝工程 , 2020,31(17): 47~ 51 河北大學(xué) 2020屆本科生畢業(yè)論文 13 致 謝 我首先要感謝我的導(dǎo)師劉芃巖教授。再次致以深深的謝意! 河北大學(xué) 2020屆本科生畢業(yè)論文 14 附 錄 VOLATILE PROFILES OF SICILIAN PRICKLY PEAR (OPUNTIA FICUS INDICA) BY SPMEGC/MS ANALYSIS ABSTRACT The aroma pounds present in the headspace of homogenized slur ries of fresh prickly pears (Opuntia ?cus indica) from Sicilian cultivars were determined. Solid Phase Microextraction (SPME) followed by Gaschromatography/Mass Spectrometry (GC/MS) analysis was used to characterize the volatile pounds. The volatile ?avor pro?les of the three cultivars investigated (red, white and yellow) showed signi?cant differences. The aromatic pro?le of pealed prickly pears stored for one day was different from that of the fresh samples, mainly due to the occurrence of some oxidative and hydrolytic reactions. Key words: Gaschromatography/Mass Spectrometry (GC/MS) ; Opuntia ?cus indica, Prickly Pear; Solid Phase Microextraction (SPME); Volatile Flavor Pro?les INTRODUCTION Prickly pear (Opuntia ?cus indica (L.) Mill. Cactaceae) is a bushy, treelike cactus, native to Mexico and widespread throughout Sicily and the whole Mediterranean area, South Africa and Central and South America (BARBERA and INGLESE, 1993。 PALEVITCH et al., 1993). A ?ower infusion is used in traditional medicine in Sicily as a diuretic (BARBERA et al.,1988). Other recent studies have shown antioxidant activities of Sicilian prickly pear (BUTERA et al., 2020。177。C. The GC temperature program started at 35176。 this order is reversed in the red cultivar. In red and white cultivars 1hexanol is quite abundant. Similar qualitative results have been reported (ARENA et al., 2020) for prickly pears cultivated in eastern Sicily (in a volcanic area), with the same three alcohols being the prevalent pounds. However there were remarkable differences in the quantitative ratio of these pounds pared with our results。vez A., Valles V. and Roldan . 1995. The Nopal: A plant of manifold qualities. In “World Review of Nutrition and Dietetics”。其多汁葉片的邊緣生有花和果實(shí)。 紅色和黃色色素分別被定性為 betacyanins 和 betaxanthines。 SPMEGC/MS 法不需要使用溶劑、復(fù)雜樣品處理和復(fù)雜的儀器;檢測(cè)快速并有良好的靈敏度和重現(xiàn)性。C。柱頭處載氣(氦氣)的壓力固定在 12 Psi。C(保持 5min)。通過(guò)與 NIST2020 質(zhì)譜數(shù)據(jù)庫(kù)進(jìn)行 嚴(yán)格 的對(duì)比, 1己醇、 3己烯 1醇、 2己烯1醇、辛酸甲酯、 1辛 醇被定性為標(biāo)準(zhǔn)化合物。 目前,含量最 多 的酯類(lèi)是 4癸烯酸甲基酯,其次是 2己烯 1醇乙酸和乙酸己酯, 只在黃色品種中檢測(cè)到較多的丁酸 2甲基甲酯 。 圖 1-新鮮去皮水果的氣相色譜: 1=丁酸甲酯; 2=2甲基丁酸甲酯; 3=己酸甲酯; 4=3己酸甲酯;5=乙酸己酯; 6=2己烯 1醇乙酸酯; 7=正己醇; 8=反式 2己烯 1醇; 9=里哪醇; 10=癸酸甲酯; 11=4癸酸甲酯; 12=1,9壬二醇; 13=反式 2壬烯 1醇; 14=2,6壬二烯 1醇 對(duì)東西西里島(火山區(qū))仙人球的定性結(jié)果已經(jīng)報(bào)告,普遍含有三種醇類(lèi)化合物。 新鮮的和存儲(chǔ)一天的黃色、白色、紅色仙人球中的揮發(fā)性成分用 SPME 頂空萃取并用GC/MS 分析。C (保持 10min),再以 10176。色譜儀進(jìn)樣口溫度為 250℃ ,分流模式,解吸時(shí)間 5min。玻璃瓶中放入磁子攪拌,恒溫水浴加熱,溫度控制在 36177。 頂空固相微萃?。?HSSPME)后用氣相色譜 /質(zhì)譜法( GC/MS)分析。其他近期的研究表明,西西里仙人球有抗氧化活性。 關(guān)鍵詞: 氣相色譜 /質(zhì)譜( GC/MS);仙人球;固相微萃??;揮發(fā)性狀況 前言 仙人球是一種濃密的樹(shù)形仙人掌,產(chǎn)自墨西哥,遍布西西里島、地中海地區(qū)、南非、美洲中部及南部。oz de Ch224。 1hexanol, 3hexen1ol,2hexen1ol, octanoic acid methyl es ter, 1octanol were also con?rmed us ing standard pounds. RESULTS AND DISCUSSION 河北大學(xué) 2020屆本科生畢業(yè)論文 18 The percentage of reconstructed total ion current (RIC) and the retention index of each pound for fresh peeled and oneday stored fruits are reported in Tables1 and 2, respectively. The use of RIC % in a quantitative approach has severe limitations, as is evident in the peak areas that do not reflect the real amounts of the different pounds, but, such semi quantitative data is very useful as a tool for parison. Gas chromatograms of the fresh peeled fruit are showed in Fig. 1。C was ?xed at 5 min in the splitless mode. 河北大學(xué) 2020屆本科生畢業(yè)論文 16 The analyses were run on a GC/ MS Varian Saturn 3Ion Trap System, equipped with a 30 m x mm . fusedsilica capillary column Supelcowax10 (Supelco, Bellafonte, PA) coated with Polyethylene glycol with a ?lm thickness of 181。 it is fast and ensures excellent sensitivity and reproducibi lity. It has been used recently for the analysis of the volatile ponents responsible for the aroma in various fruit (AUGUSTO et al., 2020。 BARBERA et al., 1988). Further, prickly pear may be used for the treatment of gastritis, hyperglycemia, ar teriosclerosis, diabetes and prostate hypertrophy (HEGWOOD, 1990。在此,向她表示衷心的感謝! 同時(shí)也要感謝化學(xué)與環(huán)境科學(xué)學(xué)院各位領(lǐng)導(dǎo)和老師。 河北大學(xué) 2020屆本科生畢業(yè)論文 12 參考文獻(xiàn) [1] 于艷軍,李寧濤,韓偉等 . 食品接觸材料表面印刷油墨中光引發(fā)劑的高效液相色譜 串聯(lián)質(zhì)譜法檢測(cè)和 提取 研究 [J]. 分析化學(xué)研究報(bào)告 , 2020, 39(9): 1387~ 1393 [2] 賴(lài)毅東,彭喜春 . GCNPD 法測(cè)定復(fù)合食品包裝袋中 2,4二氨基甲苯 [J]. 現(xiàn)代食品科技, 2020,25(1): 95~ 97 [3] 莫佳琳,繆璐,干寧軍 . 超高效液相色譜 串聯(lián)質(zhì)譜法 測(cè)定食品包裝材料中全氟辛酸及其鹽類(lèi)物質(zhì) [J]. 現(xiàn)代食品科技 , 2020, 27(4): 473~ 476 [4] 呂 剛,王利兵, 劉 軍 等 . 包裝材料中的酚類(lèi)環(huán)境雌激素的測(cè)定 固相微萃取 /氣相色譜質(zhì)譜法 [J]. 分析 實(shí)驗(yàn) 室 , 2020, 27(9): 73~ 75 [5] 丁力,呂昌銀,曾棟等 . 復(fù)合食品包裝袋中二氨基甲苯的 GCMS 測(cè)定方法研究 [J]. 中國(guó)衛(wèi)生檢驗(yàn)雜志 , 2020, 17(9): 1540~ 1576 [6] Modock G, Sch