AAU Energy, Aalborg University, Niels Bohrs Vej 8, 6700 Esbjerg, Denmark.
Centre of Marine Sciences, University of Algarve, Campus of Gambelas, 8005-139 Faro, Portugal.
Mar Drugs. 2023 Jun 27;21(7):380. doi: 10.3390/md21070380.
Bioactive extracts are often the target fractions in bioprospecting, and halophyte plants could provide a potential source of feedstock for high-value applications as a part of integrated biorefineries. (Jacq.) Dobrocz. (sea aster) and L. (sea fennel) are edible plants suggested for biosaline halophyte-based agriculture. After food production and harvesting of fresh leaves for food, the inedible plant fractions could be utilized to produce extracts rich in bioactive phytochemicals to maximize feedstock application and increase the economic feasibility of biomass processing to bioenergy. This study analyzed fresh juice and extracts from screw-pressed sea aster and sea fennel for their different phenolic compounds and pigment concentrations. Antioxidant and enzyme inhibition activities were also tested in vitro. Extracts from sea aster and sea fennel had phenolic contents up to 45.2 mgGAE/gDM and 64.7 mgGAE/gDM, respectively, and exhibited >70% antioxidant activity in several assays. Ethanol extracts also showed >70% inhibition activity against acetylcholinesterase and >50% inhibition of tyrosinase and α-glucosidase. Therefore, these species can be seen as potential feedstocks for further investigations.
生物活性提取物通常是生物勘探的目标成分，盐生植物可以作为综合生物炼制厂的一部分，为高价值应用提供潜在的原料来源。（Jacq.）Dobrocz.（海星）和 L.（海茴香）是可食用植物，被建议用于基于生物盐生植物的农业。在进行食品生产和收获新鲜叶子用于食品之后，可食用植物部分可用于生产富含生物活性植物化学物质的提取物，以最大限度地利用原料，并提高生物量加工为生物能源的经济可行性。本研究分析了螺旋压榨海星和海茴香的新鲜汁液和提取物，以研究其不同的酚类化合物和色素浓度。还在体外测试了抗氧化和酶抑制活性。海星和海茴香的提取物的酚含量分别高达 45.2 和 64.7 mgGAE/gDM，在多项测定中表现出>70%的抗氧化活性。乙醇提取物对乙酰胆碱酯酶的抑制活性也>70%，对酪氨酸酶和α-葡萄糖苷酶的抑制活性>50%。因此，这些物种可以被视为进一步研究的潜在原料。
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