Biotecnia最新文献_第10页

Uso de vinazas de mezcal para producir metano por co-digestión con estiércol de bovino 利用梅斯卡尔酒糟与牛粪共消化产生甲烷

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1501

Edwin Alfonso Zelaya-Benavidez, G. A. Martínez-Gutiérrez, Celerino Robles Pérez, Isidro Morales García

{"title":"Uso de vinazas de mezcal para producir metano por co-digestión con estiércol de bovino","authors":"Edwin Alfonso Zelaya-Benavidez, G. A. Martínez-Gutiérrez, Celerino Robles Pérez, Isidro Morales García","doi":"10.18633/biotecnia.v24i2.1501","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1501","url":null,"abstract":"The best co-digestion ratio between mezcal vinasses and bovine manure was investigated to produce methane.Five vinasses and bovine manure mixtures in different proportionswere compared (v/v): 25-75, 50-50, 75-25, 100-0, and 0-100, with six replications. As reactors, 496 mL glasscontainers with hermetic seal were used, with 300 mL of active volume under mesophilic conditions (36 ± 1 oC) for 10 days. The pH, total solids, and volatile solids of vinasses,bovine manure, and their mixtures were determined in triplicate.The methane accumulated volume was greater with the 0-100 and 75-25, followed by the 100-0, with 286.23, 286.40, and 225.48 NmL CH4, respectively. Methane yield was higher with 100-0 and 75-25 with 28.27 and 22.77 NmL CH4 g-1volatile solids, respectively. The Gompertz bacterial growthmodel showed that the micro-organisms adaptation periodin vinasses was longer than in bovine manure. Co-digestionof vinasses and bovine manure in proportion 75-25 % improvedthe methane production by 26.7 % with respect to the digestion of vinasses alone, and reduced the adaptation timeof bacteria to vinasses by 4.12 days.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41825144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estudio Fisicoquímico de Quitina y Quitosana obtenidas a partir del exoesqueleto de camarón café (Farfantepenaeus californiensis) 加利福尼亚对虾外骨骼中几丁质和壳聚糖的物理化学研究

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1616

K. G. Martinez-Robinson, Alfredo Martínez-Inzunza, Sarai Rochín-Wong, Rosalva Josefina Rodríguez Córdova, S. R. Vasquez-Garcia, Daniel Fernández-Quiroz

{"title":"Estudio Fisicoquímico de Quitina y Quitosana obtenidas a partir del exoesqueleto de camarón café (Farfantepenaeus californiensis)","authors":"K. G. Martinez-Robinson, Alfredo Martínez-Inzunza, Sarai Rochín-Wong, Rosalva Josefina Rodríguez Córdova, S. R. Vasquez-Garcia, Daniel Fernández-Quiroz","doi":"10.18633/biotecnia.v24i2.1616","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1616","url":null,"abstract":"This work describes the obtention of chitin and chitosan from the brown shrimp exoskeleton (Farfentepenaeus californiensis), which is collected from the Gulf of California. The chitin isolation process was carried out by a consecutive treatment that includes demineralization and deproteinization. On the other hand, the preparation of chitosan was conducted through alkaline hydrolysis, and the product was purified by using a membrane filters series to homogenize the size of the macromolecular chains. According to the methodology, the yield of chitin and chitosan was around 34 % and 20 % (dry weight), respectively. The materials were characterized by FTIR spectroscopy and thermogravimetric analysis. Also, the chitosan sample was analyzed by proximal test, viscometric-average molecular weight, and deacetylation degree. The products exhibited chemical structure and physicochemical properties comparable to biopolymers isolated from similar sources reported in the literature. Chitosan was found to have a degree of acetylation of 15.87 % (by 1H-NMR analysis) and Mv=170 kDa. The results suggest that the chitinous waste from the Sea of Cortes coast can be considered a promising source for the preparation of chitosan and used for several applications in the region.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43994553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluación de una dieta antioxidante para tilapia Oreochromis niloticus con inclusion de subproducto de mango y jamaica 含芒果和牙买加副产品的罗非鱼Oreochromis niloticus抗氧化饲料的评价

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1583

Andrés Concepción Brindis, Edgar Iván Jiménez Ruiz, María Teresa Sumaya Martínez, Jesús Ernesto Rincones López, Leticia Mónica Sánchez Herrera, Viridiana Peraza Gómez, Raquel Enedina- Medina Carrillo, Milton Spanopoulos Hernández

{"title":"Evaluación de una dieta antioxidante para tilapia Oreochromis niloticus con inclusion de subproducto de mango y jamaica","authors":"Andrés Concepción Brindis, Edgar Iván Jiménez Ruiz, María Teresa Sumaya Martínez, Jesús Ernesto Rincones López, Leticia Mónica Sánchez Herrera, Viridiana Peraza Gómez, Raquel Enedina- Medina Carrillo, Milton Spanopoulos Hernández","doi":"10.18633/biotecnia.v24i2.1583","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1583","url":null,"abstract":"The aquaculture industry has currently experienced a growing interest in implementing antioxidants from natural origin in diets because the synthetic ones that have been used are associated to carcinogenic and teratogenic effects. Additionally, synthetic antioxidants have been included in such diets to prevent lipid oxidation during storage and distribution of the organisms without an approach from their health status point of view since they require micronutrients, such as bioactive compounds, mainly antioxidants. Thus, mango and roselle by-products rich in bioactive compounds were included in the aquaculture diet, assessed on their antioxidant properties and performance on tilapia Oreochromis niloticus, and compared with reference and commercial diets. The results of the different experimental diets indicated that their properties increased -according to the analyses of anti-radical antioxidant activity 1,1-diphenyl-2-pricrylhydrazyl (DPPH●) ferric reducing antioxidant power (FRAP) of ferric ion (Fe III) and phenolic compound concentration- with the inclusion of the by-products included as novel inputs. With respect to the zootechnical parameters assessed, no differences were found, so no negative effect was considered during feeding with the novel functional diet. Therefore, the potential use of the assessed by-products in commercial diets is inferred, suggesting assessment during the fattening stages of the species under commercial rearing conditions.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42821080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Contenido de acetogeninas a partir de semillas del fruto de guanábana (Annona muricata L.): Evaluación de diferentes condiciones de extracción 番荔枝果实(番荔枝)种子中乙酰原素含量:不同提取条件的评价

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1453

Gabriela Aguilar-Hernández, L. G. Zepeda-Vallejo, Ma. de Lourdes García-Magaña, Ulises López-García, Selene Aguilera-Aguirre, E. Montalvo-González

{"title":"Contenido de acetogeninas a partir de semillas del fruto de guanábana (Annona muricata L.): Evaluación de diferentes condiciones de extracción","authors":"Gabriela Aguilar-Hernández, L. G. Zepeda-Vallejo, Ma. de Lourdes García-Magaña, Ulises López-García, Selene Aguilera-Aguirre, E. Montalvo-González","doi":"10.18633/biotecnia.v24i2.1453","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1453","url":null,"abstract":"El objetivo fue evaluar la extracción de acetogeninas (ACGs) de semillas de guanábana usando diferentes disolventes, métodos y número de extracciones. El trabajo se desarrolló en cuatro ensayos. En el primer ensayo se evaluaron siete disolventes (metanol, acetato de etilo, diclorometano, cloroformo, éter dietílico, hexano, y éter de petróleo) para extraer ACGs de semillas mediante extracción asistida con ultrasonido (EAU). En el segundo ensayo se comparó la EAU, método soxhlet y disolventes, para obtener ACGs de semillas desengrasadas. En el tercer ensayo se evaluó el efecto del disolvente y número de extracciones con EAU, sobre el contenido de ACGs en endospermo desengrasado. En el cuarto ensayo, se identificaron ACGs. Se observó una mayor presencia de ACGs en los extractos de semillas completas sin desengrasar, con metanol y acetato de etilo. La EAU extrajo más ACGs a partir de la semilla completa desengrasada. Sin embargo, usando el endospermo desengrasado, EAU y cinco extracciones con metanol por 50 min cada una, se obtuvo el mayor contenido de ACGs (25.14 mg/g base seca). Se identificaron dos ACGs (annonacina, y pseudoannonacina) en proporción 73:27. Estas últimas condiciones, son una alternativa para aumentar el rendimiento de extracción de ACGs de semillas de A. muricata.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44542820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Influencia del color en compuestos fenólicos y propiedades bioactivas de la miel de Guerrero, México 颜色对墨西哥格雷罗蜂蜜酚类化合物和生物活性的影响

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1384

Carmen Ivet Mendoza Bacilio, Ruiz Epifanio Gómez, Alejandro Yam Puc, Luz Patricia Avila Caballero, Francisco Palemón Alberto, Felix Torres Guzmán, Jorge Bello Martínez

{"title":"Influencia del color en compuestos fenólicos y propiedades bioactivas de la miel de Guerrero, México","authors":"Carmen Ivet Mendoza Bacilio, Ruiz Epifanio Gómez, Alejandro Yam Puc, Luz Patricia Avila Caballero, Francisco Palemón Alberto, Felix Torres Guzmán, Jorge Bello Martínez","doi":"10.18633/biotecnia.v24i2.1384","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1384","url":null,"abstract":"Honey is mainly composed of glucose and fructose between 80 and 85 %, which come from the nectar collected by the bees; therefore, it is considered a great caloric source. The present study aimed to evaluate the influence of color, on chemical composition and bioactive properties of polyfloral honey collected in different geographical regions of Guerrero state, Mexico. The honey samples were from the 2018 harvest and honeys were analyzed to determine their total phenolic and flavonoids content, as well as their antioxidant and antimicrobial activity. The phenolic and flavonoids content varied considerably, and the highest values were obtained for dark amber honeys. Similarly, dark amber honeys showed higher antioxidant activity. The antibacterial activity was more effective against Gram-positive bacteria than Gram-negative bacteria; also, results indicated that fungi were less susceptible than bacteria. A positive correlation between color and antioxidant capacity was found. Correlation existed also between color vs phenolics content, vs flavonoid content or between phenolic vs flavonoid. Principal component analysis (PCA) on bioactive results was a useful tool to characterize different types of honey based on the variables of each group in relation to the similarity between the samples.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49286811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antibacterial and antimycobacterial activity of white shrimp (Litopenaeus vannamei) exoskeleton and cephalothorax by-products extracts: fatty acids profile of the active hexanic shrimp cephalothorax extract 凡纳滨对虾(Litopenaeus vannamei)外骨骼和头胸副产物提取物的抗菌和抑菌活性:活性己酸对虾头胸提取物的脂肪酸谱

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1648

C. López-Saiz, E. W. Coronado-Aceves, Rosario Tavera-Hernández, C. Espitia-Pinzón, M. Jiménez-Estrada, Patricia Guadalupe Morán-Corrales, Martin Samuel Hernández Zazueta

{"title":"Antibacterial and antimycobacterial activity of white shrimp (Litopenaeus vannamei) exoskeleton and cephalothorax by-products extracts: fatty acids profile of the active hexanic shrimp cephalothorax extract","authors":"C. López-Saiz, E. W. Coronado-Aceves, Rosario Tavera-Hernández, C. Espitia-Pinzón, M. Jiménez-Estrada, Patricia Guadalupe Morán-Corrales, Martin Samuel Hernández Zazueta","doi":"10.18633/biotecnia.v24i2.1648","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1648","url":null,"abstract":"The objective of this study was to evaluate the antibacterial and antimycobacterial potential of the by-products of white shrimp (Litopenaeus vannamei). Sonora, México is the second shrimp producer state. The following extracts were obtained: exoskeleton hexanic, methanolic and acqueous extracts (ExHex, ExMe, ExAc); and cephalothorax hexanic, acetonic and methanolic extracts (CeHex, CeAce, CeMe). Antibacterial effect was determined by the broth microdilution method against Gram-positive bacteria: Enterococcus faecalis American Type Culture Collection (ATCC) 51299, Staphylococcus aureus ATCC 25293, and Staphylococcus epidermidis; Gram-negative bacteria: Escherichia coli ATCC 25922, Klebsiella pneumoniae, Pseudomonas aeruginosa ATCC 10145, and Salmonella typhimurium; and Mycobacterium bovis bacillus Calmette-Guérin (M. bovis BCG) Danish strain. CeHex resulted active against all Gram-positive and Gram-negative bacteria (MIC50= 400 ug mL-1) and against M. bovis BCG (MIC100= 250 ug mL-1). Gas chromatography (GC) of CeHex identified oleic, linoleic, palmitic, stearic, behenic, palmitoleic and linolenic fatty acids. The strong antibacterial activity of CeHex and the identification of its main chemical constituents justify further studies on the clinical applications of this marine by-product.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44277394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Concentración y método de aplicación de selenio en plántulas de pimiento 辣椒幼苗中硒的浓度及其施用方法

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1675

C. R. Juárez-Rosete, O. Gonzalez-Chavez, G. Alejo-Santiago, R. Bugarín-Montoya, B. G. Arrieta-Ramos, P. Juárez-López

{"title":"Concentración y método de aplicación de selenio en plántulas de pimiento","authors":"C. R. Juárez-Rosete, O. Gonzalez-Chavez, G. Alejo-Santiago, R. Bugarín-Montoya, B. G. Arrieta-Ramos, P. Juárez-López","doi":"10.18633/biotecnia.v24i2.1675","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1675","url":null,"abstract":"El selenio (Se) es considerado un elemento benéfico para las plantas; sin embargo, concentraciones elevadas pueden causar trastornos fisiológicos y morfológicos. El objetivo del estudio, fue identificar la concentración y método de aplicación de Se que permita la obtención de plántulas de calidad en cultivo de pimiento, por ello, se establecieron dos experimentos bajo condiciones de invernadero cultivados en solución nutritiva. En el experimento 1, para aplicación radical, se cultivaron plántulas en solución nutritiva enriquecida con Se en forma de Na3SeO4 en concentraciones de: 0.0, 1.0, 2.5, 5.0 y 10.0 μM. En el experimento 2, para aplicación foliar, las plántulas se asperjaron con Se en forma de Na3SeO4 en concentraciones de 0, 5, 10, 25 y 50 μM. En cada experimento se utilizó un diseño experimental completamente al azar con cinco repeticiones por tratamiento. El suministro de 1 y 5 μM de Se mediante aplicación radical y foliar respectivamente, estimularon el crecimiento de las plántulas de pimiento, asimismo, la presencia de Se en ambos métodos de aplicación, aumentó la concentración de pigmentos fotosintéticos en hojas. El Se mejoró la calidad de las plántulas, al inducir respuestas favorables en el crecimiento y concentración de pigmentos fotosintéticos.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47123190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In vitro anti-inflammatory and antioxidant activity of chickpea (Cicer arietinum L.) proteins hydrolysate fractions 鹰嘴豆(Cicer arietinum L.)蛋白水解物的体外抗炎和抗氧化活性

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1594

Ofelia Gabriela Meza Márquez, Milagros Faridy Juárez-Chairez, Y. Márquez-Flores, C. Jiménez-Martínez, G. Osorio-Revilla

{"title":"In vitro anti-inflammatory and antioxidant activity of chickpea (Cicer arietinum L.) proteins hydrolysate fractions","authors":"Ofelia Gabriela Meza Márquez, Milagros Faridy Juárez-Chairez, Y. Márquez-Flores, C. Jiménez-Martínez, G. Osorio-Revilla","doi":"10.18633/biotecnia.v24i2.1594","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1594","url":null,"abstract":"Chickpea is a legume that has exhibited various biological activities. The anti-inflammatory and antioxidant activities of chickpea proteins hydrolysate fractions were evaluated. The extensive protein hydrolysate (greater than 50 %) obtained by enzymatic hydrolysis was fractionated and 5-10 kDa, 3-5 kDa, 1-3 kDa, and ≤1 kDa fractions were obtained. The anti-inflammatory activity was determined in murine peritoneal macrophages stimulated with lipopolysaccharide (LPS). Fractions of F5-10 kDa, F3-5 kDa, F1-3 kDa presented the highest inhibition of nitric oxide (76 %), Tumoral Necrosis Factor-α (93 %), and Interleukin-1β (90 %) synthesis. Antioxidant activity was evaluated by ABTS, DPPH methods, Fe3+ reducing power and Cu2+ chelating capacity. The fraction of F1-3 kDa showed higher inhibition of ABTS (78 %) and DPPH (7.76 %) radicals, besides showed the highest Fe3+ reducing capacity (0.508 Abs700nm), for Cu2+ chelating capacity F≤1 kDa showed higher inhibition (52.60 %). Chickpea protein shows biological activities such as anti-inflammatory and antioxidant, so it can be considered a source of low molecular weight bioactive peptides that can be used as alternative therapies for certain diseases related to chronic inflammation.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44440586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Composición química, digestibilidad y rendimiento de Brachiaria decumbens a diferentes edades de rebrote 不同再生年龄下卧臂蕨的化学成分、消化率和产量

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1606

Juan José Reyes Pérez, Yuniel Méndez Martínez, Kleber Augusto Espinoza Cunuhay, Ricardo Lenin Bastidas Espinoza, Jorge Andrés Apolo Bosquez, Jorge Luis Ramírez de la Ribera, Francisco Higinio Ruiz Espinoza

{"title":"Composición química, digestibilidad y rendimiento de Brachiaria decumbens a diferentes edades de rebrote","authors":"Juan José Reyes Pérez, Yuniel Méndez Martínez, Kleber Augusto Espinoza Cunuhay, Ricardo Lenin Bastidas Espinoza, Jorge Andrés Apolo Bosquez, Jorge Luis Ramírez de la Ribera, Francisco Higinio Ruiz Espinoza","doi":"10.18633/biotecnia.v24i2.1606","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1606","url":null,"abstract":"El objetivo del estudio fue determinar la composición química, digestibilidad y rendimiento de Brachiaria decumbens a diferentes edades de rebrote. Las epocas fueron; poco lluvioso (Enero-Abril) y lluvioso (Julio-Octubre). Los tratamientos (edades de rebrote: 30, 45, 60, 75, 90 y 105 días) se distribuyeron en un diseño de bloques al azar con cuatro réplicas. La materia seca (MS) presentó valores superiores (p≤0.01), a los 60 días con 6.05 y 1.83 t MS ha-1 para el lluvioso y poco lluvioso. La proteína bruta (p≤0.01) en ambos períodos se reflejó a los 30 días, 11.82 % para el lluvioso y 12.28 % para el poco lluvioso. La digestibilidad mostró los porcentajes mayores (p≤0.001) a los 30 días en lluvias y pocas lluvias, con 57.9 y 61.13%. La composición química, digestibilidad y rendimiento de Brachiaria decumbens fue influenciada de forma directa por las diferentes edades de rebrote, al aumentar la producción de la planta y disminuir su calidad. Se obtuvieron ecuaciones de regresión cuadráticas y cúbicas (coeficientes superiores a 0.72) que establecieron una estrecha relación con la edad y los indicadores del rendimiento, la composición química y digestibilidad.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48984434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Extracción, caracterización y actividad antioxidante de lignina de lirio acuático (Eichhornia crassipes) y cáscara de nuez pecanera (Carya illinoinensis) 睡莲（凤眼莲）和山核桃壳（山核桃）木质素的提取、表征和抗氧化活性

IF 0.6

Biotecnia Pub Date : 2022-05-31 DOI: 10.18633/biotecnia.v24i2.1642

José Luis Espinoza-Acosta, Beatriz Montaño-Leyva, D. E. Valencia-Rivera, A. I. Ledesma-Osuna, Alejandro Vega-Rios

{"title":"Extracción, caracterización y actividad antioxidante de lignina de lirio acuático (Eichhornia crassipes) y cáscara de nuez pecanera (Carya illinoinensis)","authors":"José Luis Espinoza-Acosta, Beatriz Montaño-Leyva, D. E. Valencia-Rivera, A. I. Ledesma-Osuna, Alejandro Vega-Rios","doi":"10.18633/biotecnia.v24i2.1642","DOIUrl":"https://doi.org/10.18633/biotecnia.v24i2.1642","url":null,"abstract":"En este trabajo se investigó el potencial de lirio acuático (Eichhornia crassipes) y cáscara de nuez pecanera (Carya illinoinensis) como fuente de lignina. La extracción de la lignina se realizó aplicando un procedimiento organosolv y fue caracterizada por espectroscopía de infrarrojo, microscopía electrónica de barrido, y análisis termogravimétrico. La actividad antioxidante fue determinada a través de la estabilización de los radicales libres DPPH y ABTS. Los resultados mostraron mayor contenido de lignina y rendimiento de extracción en las cáscaras de nuez. El espectro infrarrojo reveló bandas típicas de los principales grupos funcionales; grupos –OH fenólicos, grupos metilo C–H3 y metoxilo O–CH3 los cuales forman parte del anillo aromático de la lignina. La lignina de lirio acuático (LLA) mostró alta resistencia a la degradación térmica la cual la sitúa como componente interesante para el desarrollo de resinas fenólicas y retardantes de flama. La lignina extraída de las cáscaras de nuez pecanera (LCN) mostró un alto porcentaje de inhibición contra los radicales DPPH y ABTS cuando fue solubilizada en etanol, metanol y mezclas de etanol-metanol 50:50 v/v. La alta actividad antioxidante de la LCN indica que este tipo de lignina pueden tener aplicaciones en la industria de alimentos y farmacéutica.","PeriodicalId":8876,"journal":{"name":"Biotecnia","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43397417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0