TY - JOUR
T1 - Estudio de la variabilidad en el tiempo y espacio de la actividad antioxidante y composición bioquímica de Kappaphycus alvarezii en diferentes densidades de siembra
AU - Ch, Estefany Lema
AU - Chóez-Guaranda, Iván
AU - Ruíz-Barzola, Omar
AU - Jaramillo, Lorena I.
AU - de Valgaz, Ángela Pacheco Flores
AU - Van Den Hende, Sofie
AU - Manzano, Patricia
N1 - Publisher Copyright:
© 2022 by the authors.
PY - 2023
Y1 - 2023
N2 - Kappaphycus alvarezii is a species of algae most cultivated in the world, due to its high content of bioactive compounds with reported antioxidant and biostimulant activities. The present study evaluated the effect of stocking densities on the biochemical and antioxidant composition of K. alvarezii cultivated in a long-line system, during the dry and wet seasons to provide a scientific basis for optimal harvesting. Moisture content, ash, fat, fiber, auxins, phenols, flavonoids, DPPH, and ABTS were measured. Data were analyzed using t-tests, Wilcoxon, Kruskal-Wallis, and one-way ANOVA. The results showed a higher fat content (2.01% P.s), crude fiber (5.21% P.s), total phenol content (324.09 μg GAE/g P.s), and ABTS (9.32 μg GAE/g P.s) during the dry season. Concerning the stocking density, a significant increase in the content of ash, total phenols, and ABTS was evidenced in the density of 10 lines.cell-1 at the same time. On the other hand, the content of flavonoids, DPPH, and auxins showed an opposite seasonal trend, reaching maximum levels in the wet season. This study provides new information on the environmental conditions that can lead to changes in the antioxidant activity and biochemical composition of this species to develop bioproducts for different industrial sectors such as food, pharmaceutical, and fertilizer in Ecuador.
AB - Kappaphycus alvarezii is a species of algae most cultivated in the world, due to its high content of bioactive compounds with reported antioxidant and biostimulant activities. The present study evaluated the effect of stocking densities on the biochemical and antioxidant composition of K. alvarezii cultivated in a long-line system, during the dry and wet seasons to provide a scientific basis for optimal harvesting. Moisture content, ash, fat, fiber, auxins, phenols, flavonoids, DPPH, and ABTS were measured. Data were analyzed using t-tests, Wilcoxon, Kruskal-Wallis, and one-way ANOVA. The results showed a higher fat content (2.01% P.s), crude fiber (5.21% P.s), total phenol content (324.09 μg GAE/g P.s), and ABTS (9.32 μg GAE/g P.s) during the dry season. Concerning the stocking density, a significant increase in the content of ash, total phenols, and ABTS was evidenced in the density of 10 lines.cell-1 at the same time. On the other hand, the content of flavonoids, DPPH, and auxins showed an opposite seasonal trend, reaching maximum levels in the wet season. This study provides new information on the environmental conditions that can lead to changes in the antioxidant activity and biochemical composition of this species to develop bioproducts for different industrial sectors such as food, pharmaceutical, and fertilizer in Ecuador.
KW - antioxidants
KW - Biochemical composition
KW - Flavonoids
KW - Phenols
KW - Red algae
KW - Seasonal variation
KW - stocking density
UR - http://www.scopus.com/inward/record.url?scp=85153883476&partnerID=8YFLogxK
U2 - 10.21931/RB/2023.08.01.13
DO - 10.21931/RB/2023.08.01.13
M3 - Artículo
AN - SCOPUS:85153883476
SN - 1390-9347
VL - 8
JO - Bionatura
JF - Bionatura
IS - 1
ER -