Jiru M, Stranska-Zachariasova M, Kohoutkova J, Schulzova V, Krmela A, Revenco D, Koplik R, Kastanek P, Fulin T, Hajslova J
Department of Food Analysis and Nutrition, University of Chemistry and Technology, Prague, Technická 3, 166 28 Prague, Czech Republic.
EcoFuel Laboratories s.r.o, Ocelářská 9, 190 00 Praha 9, Czech Republic.
J Food Sci Technol. 2021 Nov;58(11):1-10. doi: 10.1007/s13197-020-04896-3. Epub 2021 Jan 3.
In line with the growing interest in humans' nutrition, production of microalgae-based functional foods characterized by an increased content of bioactive substances is attractive. The aim of this study was to investigate the potential of microalgae as additives to feed for laying hens, to enrich the eggs with polyunsaturated fatty acids (PUFA) and selenium/carotenoid antioxidants. Our results showed that supplementation of hens by feed containing 1% of or 1% of leads to increase of long-chain PUFA in eggs by 26-66%. Addition of 1% of to feed causes the increase of lutein and cantaxanthin in eggs by 48% and 18%, respectively, and addition of 0.5% selenium enriched increases the final content of organic selenium in eggs by 100-152%. As concerns selenium, it is important to notice that its bioavailability has to be considered. Despite the higher concentration of total selenium in than in its bioaccessibility in was limited, thus out of usage for feeding purposes. Administration of combinations of selenium enriched + and + verified the increased concentrations of organic selenium, PUFA, as well as carotenoids, with no adverse effect on quality and productivity of eggs. The study confirmed the potential of both traditional as well as new microalgae to be used as feed supplements for functional eggs production. The supplementation of hens by specific microalgae combinations could be advantageous in terms of spectrum of bioactive compounds present.
随着人们对人类营养的兴趣日益浓厚，生产以生物活性物质含量增加为特征的微藻基功能性食品具有吸引力。本研究的目的是探讨微藻作为蛋鸡饲料添加剂的潜力，以增加鸡蛋中的多不饱和脂肪酸（PUFA）以及硒/类胡萝卜素抗氧化剂。我们的结果表明，用含有1%的 或1%的 的饲料补充母鸡，可使鸡蛋中的长链PUFA增加26 - 66%。在饲料中添加1%的 可使鸡蛋中的叶黄素和角黄素分别增加48%和18%，添加0.5%富硒 可使鸡蛋中有机硒的最终含量增加100 - 152%。关于硒，必须注意其生物利用度。尽管 中总硒的浓度高于 ，但其在 中的生物可及性有限，因此不能用于喂养目的。施用富硒 + 和 + 的组合证实了有机硒、PUFA以及类胡萝卜素浓度的增加，且对鸡蛋的质量和产量没有不利影响。该研究证实了传统微藻和新型微藻作为功能性鸡蛋生产饲料补充剂的潜力。通过特定微藻组合对母鸡进行补充，就所存在的生物活性化合物谱而言可能是有利的。
