Department of Sugar Industry and Food Safety Management, Faculty of Biotechnology and Food Science, Lodz University of Technology, ul. Wolczanska 171/173, 90-530 Lodz, Poland.
Institute of Food Technology and Analysis, Faculty of Biotechnology and Food Science, Lodz University of Technology, ul. B. Stefanowskiego 2/22, 90-537 Lodz, Poland.
Molecules. 2022 Aug 11;27(16):5125. doi: 10.3390/molecules27165125.
Although sugar beets are primarily treated as a source of sucrose, due to their rich chemical composition, they can also be a source of other carbohydrates, e.g., mono- and oligosaccharides. The study focused on both fresh beet roots and those stored in mounds. Our studies have shown that, in addition to sucrose, sugar beet tissue also comprises other carbohydrates: kestose (3.39%) and galactose (0.65%) and, in smaller amounts, glucose, trehalose and raffinose. The acidic hydrolysis of the watery carbohydrates extracts resulted in obtaining significant amounts of glucose (8.37%) and arabinose (3.11%) as well as xylose and galactose and, in smaller amounts, mannose. An HPSEC liquid chromatography study of the molecular mass profile of the carbohydrate compounds present in the beet roots showed alongside the highest percentage (96.53-97.43%) of sucrose (0.34 kDa) the presence of pectin compounds from the araban group and arabinoxylooligosaccharides (5-9 kDa) with a percentage share of 0.61 to 1.87%. On the basis of our research, beet roots can be considered a potential source of carbohydrates, such as kestose, which is classified as fructooligosaccharide (FOS). The results of this study may be helpful in evaluating sugar beets as a direct source of various carbohydrates, or as a raw material for the biosynthesis of fructooligosaccharides (FOS) or galactooligosaccharides (GOS).
虽然甜菜主要被视为蔗糖的来源，但由于其丰富的化学成分，它们也可以成为其他碳水化合物的来源，例如单糖和低聚糖。该研究集中在新鲜甜菜根和堆存的甜菜根上。我们的研究表明，除了蔗糖外，甜菜组织还含有其他碳水化合物：蔗果三糖（3.39%）和半乳糖（0.65%），以及少量的葡萄糖、海藻糖和棉子糖。对水萃碳水化合物提取物进行酸性水解，得到了大量的葡萄糖（8.37%）和阿拉伯糖（3.11%），以及木糖和半乳糖，还有少量的甘露糖。对存在于甜菜根中的碳水化合物化合物的分子量分布进行 HPSEC 液相色谱研究表明，除了最高百分比（96.53-97.43%）的蔗糖（0.34 kDa）外，还存在阿拉伯聚糖组的果胶化合物和阿拉伯半乳寡糖（5-9 kDa），其百分比为 0.61 至 1.87%。根据我们的研究，甜菜根可以被视为碳水化合物的潜在来源，如被归类为低聚果糖（FOS）的蔗果三糖。这项研究的结果可能有助于评估甜菜作为各种碳水化合物的直接来源，或作为低聚果糖（FOS）或半乳寡糖（GOS）生物合成的原料。
