ZHOU Qi-wu, GUI Yun-xia, LI Ming-can, ZHANG Guo-chang, MA Yin-juan, BAI Hai-dong. Analysis of Main Nutrients and Heavy Metal in Five Konjac[J]. Science and Technology of Food Industry, 2020, 41(14): 234-239,248. DOI: 10.13386/j.issn1002-0306.2020.14.038

Citation: ZHOU Qi-wu, GUI Yun-xia, LI Ming-can, ZHANG Guo-chang, MA Yin-juan, BAI Hai-dong. Analysis of Main Nutrients and Heavy Metal in Five Konjac[J]. Science and Technology of Food Industry, 2020, 41(14): 234-239,248. DOI: 10.13386/j.issn1002-0306.2020.14.038

五種魔芋中主要營養(yǎng)成分及重金屬元素分析

1. 滇西科技師范學(xué)院生物技術(shù)與工程學(xué)院, 云南臨滄 677000;

2. 云南農(nóng)業(yè)大學(xué)食品科學(xué)技術(shù)學(xué)院, 云南昆明 650201;

3. 孟定海關(guān)綜合技術(shù)中心, 云南臨滄 677000;

4. 臨滄市林業(yè)科學(xué)院, 云南臨滄 677000

詳細(xì)信息

作者簡(jiǎn)介:

周啟武(1987-),男,碩士研究生,研究方向:農(nóng)產(chǎn)品安全與質(zhì)量控制、營養(yǎng)及代謝病,E-mail:zhqiwu1987@163.com。

中圖分類號(hào): TS207.5+1

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Analysis of Main Nutrients and Heavy Metal in Five Konjac

1. College of Biotechnology and Engineering, West Yunnan University, Lincang 677000, China;

2. College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China;

3. Meng Ding Customs Integrated Technology Cente, Lincang 677000, China;

4. Lincang Academy of Forestry, Lincang 677000, China

摘要

摘要: 采用分光光度法、全自動(dòng)凱氏定氮法、索氏抽提法和電感耦合等離子體質(zhì)譜(ICP-MS)檢測(cè)技術(shù)對(duì)白魔芋(Amorphophallus albus)、黑魔芋(Amorphophallus nigrum)、滇魔芋(Amorphophallus yunnanensis Engl)、珠芽魔芋(Amorphophallus bulbifer)和汀盛1號(hào)魔芋中葡甘露聚糖、蛋白質(zhì)、脂肪、粗纖維和重金屬元素進(jìn)行測(cè)定分析。結(jié)果表明,魔芋中的葡甘露聚糖含量較為豐富,可達(dá)干質(zhì)量的60%左右,脂肪含量較少為0.06%~0.54%之間,蛋白質(zhì)含量為4.16%~7.86%,粗纖維含量為3.10%~4.70%,重金屬元素中Mn含量最高,為8.170~53.290 mg/kg,其中黑魔芋中最高為53.290 mg/kg,且不同品種的魔芋中葡甘露聚糖、脂肪、蛋白質(zhì)、粗纖維、微量元素的含量均有顯著差異,但白魔芋整體營養(yǎng)價(jià)值最高。本研究可為當(dāng)前發(fā)展林下特色產(chǎn)業(yè),選擇魔芋種植品種、魔芋市場(chǎng)價(jià)值定位和精深加工等產(chǎn)業(yè)鏈提供理論依據(jù)。

關(guān)鍵詞: 魔芋  /  葡甘露聚糖  /  蛋白質(zhì)  /  脂肪  /  粗纖維  /  重金屬  /  測(cè)定分析  

Abstract: The contents of glucomannan, protein, fat, crude fiber and heavy metal was determined and analyzed by detection techniques of spectrophotometry, automatic Kjeldahl method, Soxhlet extraction and inductively coupled plasma mass spectrometry (ICP-MS) in the Amorphophallus albus, Amorphophallus nigrum, Amorphophallus yunnanensis Engl, Amorphophallus bulbifer and Tingsheng 1.The results showed that the glucomannan content in konjac was the most abundant, reaching about 60% of dry weight, the fat content was at least 0.06%~0.54%, the protein content was 4.16%~7.86%, and the crude fiber content was 3.10%~4.70%, the content of manganese (Mn) in heavy metal was 8.170~53.290 mg/kg, it was the highest up to 53.290 mg/kg in A.nigrum and the content of glucomannan, fat, protein, crude fiber and trace elements in different varieties of konjac was significantly different. On the whole, Amorphophallus albus had the highest nutritional value. This research can provide data support for the current development of under-forest specialty industries, the selection of konjac planting varieties, konjac market value positioning and intensive processing industries.

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