Month of Harvest and Leaf Age Impact the Bromatological Composition and Polyphenol Content of Gymnopodium floribundum Rolfe Leaves

Guadalupe Isabel Ortíz-Ocampo, Carlos Alfredo Sandoval-Castro, Pedro Geraldo González-Pech, Gabriela Mancilla-Montelongo, Javier Ventura-Cordero, Gloria Sarahi Castañeda-Ramírez, Juan Tun-Garrido and Juan Felipe de Jesús Torres-Acosta
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Guadalupe Isabel Ortíz-Ocampo: Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida 97315, Yucatan, Mexico
Carlos Alfredo Sandoval-Castro: Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida 97315, Yucatan, Mexico
Pedro Geraldo González-Pech: Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida 97315, Yucatan, Mexico
Gabriela Mancilla-Montelongo: CONACYT—Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida 97315, Yucatan, Mexico
Javier Ventura-Cordero: School of Biological Sciences, Queen’s University Belfast, Chlorine Gardens, Belfast BT9 5BL, UK
Gloria Sarahi Castañeda-Ramírez: Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida 97315, Yucatan, Mexico
Juan Tun-Garrido: Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida 97315, Yucatan, Mexico
Juan Felipe de Jesús Torres-Acosta: Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km 15.5 Carretera Mérida-Xmatkuil, Mérida 97315, Yucatan, Mexico

Agriculture, 2022, vol. 12, issue 8, 1-11

Abstract: In the present study, the effects of macro- and microclimatic conditions, month of harvest, and leaf age at harvest on the bromatological composition and polyphenol content of Gymnopodium floribundum leaves were evaluated. Leaves were harvested in December 2017 and 2018 and March, June, and September 2018. At each harvest, three composite samples of mixed-age leaves were collected from 12 trees (four trees for each sample), and the sampling was repeated on day 90 post-harvest to collect 90-day-old leaves. Fresh and dry matter, crude protein, acid and neutral detergent fibers (ADF and NDF, respectively), lignin, total tannins, condensed tannins (CT), total phenols, in vitro dry matter (IVDMD) and organic matter (IVOMD) digestibility, and metabolizable energy (ME) were estimated. Rainfall, relative humidity, and microhumidity were associated with chemical composition. IVDMD, IVOMD, and ME were highest in leaves sampled in March regardless of age ( p < 0.001). Water content, ADF, NDF, and lignin were highest in the leaves sampled in September, regardless of age ( p < 0.05), suggesting that leaves require more structural support in the rainy season. CT content was highest in September in the mixed-age leaves and in September and December in the 90-day-old leaves ( p < 0.05). A high fiber and CT content during the period of rapid leaf growth could deter herbivory.

Keywords: polygonaceae; rainfall; harvest month; biomass; chemical composition; polyphenols; fiber content (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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