Nutritional content of edible grasshopper (Sphenarium purpurascens) fed on alfalfa (Medicago sativa) and maize (Zea mays)

Figures & data

Table 1. Chemical composition, chitin determination, in vitro protein digestibility and protein indicators of grasshopper samples fed with alfalfa (ALF) or maize green fodder (MGF) presented in g/100 g of dry weight.

Tabla 1. Composición química, determinación de quitina, digestibilidad de proteína in vitro e indicadores de calidad proteica de las muestras de chapulín alimentado con alfalfa (ALF) o forraje de maíz (MGF) en g/100 g de peso seco

Component		ALF sample (% w/w)	MGF sample (% w/w)
Chemical composition
Crude protein		60.07 ± 1.01^a	63.94 ± 1.51^b
Total dietary fiber (TDF)		31.81 ± 0.60^a	23.15 ± 0.07^b
	Insoluble dietary fiber (IDF)	31.15 ± 0.81^a	22.21 ± 0.97^b
	Soluble dietary fiber (SDF)	0.70 ± 0.24^a	0.93 ± 1.03^a
Crude fat		14.86 ± 0.95^a	10.37 ± 0.25^b
Ashes		4.05 ± 0.06^a	4.08 ± 0.04^a
Chitin analysis
Chitin		24.89 ± 3.39^a	21.51 ± 1.23^a
% of chitin of IDF content		75.5	95.7
Digestibility analysis
In vitro protein digestibility (%)		90.01 ± 0.12^a	87.92 ± 0.25^b
Protein indicators
Sum of EAA		300.86 ^a	269.50 ^a
Sum of NAA		664.81 ^a	689.27 ^a
EAAI (%)		75.19 ^a	65.44 ^b*
BV (%)		70.75	60.12

^a and ^b: data within the same row are significantly different (p-value < 0.05).

^a and ^b*: data within the same row are significantly different (p-value < 0.10).

EAA: essential amino acid

NAA: non-essential amino acid

EAAI: essential amino acid index

BV: biological value

^ay^b: valores en la misma línea son significativamente diferentes (valor p < 0.05).

^ay^b*: valores en la misma línea son significativamente diferentes (valor p < 0.10).

EAA: aminoácidos esenciales

NAA: aminoácidos no esenciales

EAAI: índice de aminoácidos esenciales

BV: valor biológico

Table 2. Mineral composition of grasshopper fed with alfalfa (ALF) or maize green fodder (MGF) presented in mg/100 g db.

Table 2. Composición mineral de chapulín alimentado con alfalfa (ALF) o forraje de maíz (MGF) en mg/100 g de peso seco

Mineral	ALF sample	MGF sample
	(mg/100 g db)
Na	34.61 ± 1.66	37.54 ± 3.29
Mg	123.93 ± 10.64	131.33 ± 9.72
K	1028.80 ± 10.47	1007.40 ± 13.01
Ca	200.95 ± 39.10	235.15 ± 38.25
Cr	0.07 ± 0.00	0.08 ± 0.01
Mn	1.71 ± 0.10	1.74 ± 0.01
Fe	13.33 ± 1.69	18.29 ± 2.02
Co	0.03 ± 0.00	0.04 ± 0.00
Ni	0.43 ± 0.02	0.44 ± 0.02
Cu	2.98 ± 0.11	3.02 ± 0.04
Zn	17.84 ± 0.01	17.98 ± 2.29
Se	0.037 ± 0.01	0.039 ± 0.00

Figure 1. Amino acid profile of proteins analyzed from grasshopper fed with alfalfa or maize green fodder (MGF). The reference refers to the whole hen egg (FAO, 1970). * Significant difference (p-value < 0.05).

Figura 1. Perfil de aminoácidos de las proteínas analizadas de chapulín alimentado con alfalfa o forraje de maíz. Se utilizó la información del huevo de gallina como referencia (FAO, 1970). *Differencia significativa (valor p < 0.05)

FAO. (1970). Amino-acid content of foods and biological data on proteins. Retrieved July 30, 2019 from http://www.fao.org/3/AC854T/AC854T00.htm#TOC

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