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DOI	10.1016/j.sajb.2021.07.025
	The effect of size, cultivar and season on the edible qualities of nopalitos from South African cactus pear cultivars
	Du Toit, Alba; Mpemba, Onele; De Wit, Maryna; Venter, Sonja L.; Hugo, Arnold
通讯作者	Du Toit, A (corresponding author), Univ Free State, Sustainable Food Syst & Dev, POB 339, ZA-9301 Bloemfontein, South Africa.
来源期刊	SOUTH AFRICAN JOURNAL OF BOTANY
ISSN	0254-6299
EISSN	1727-9321
出版年	2021
卷号	142 页码:459-466
英文摘要	Food security is threatened in Southern Africa, because of unpredictable droughts and higher summer temperatures brought on by climate change and global warming. Durable and hardy plants that grow easily and quickly in such conditions must be adopted to ensure sustainable and reliable food supplies. The young cladodes (nopalitos) from the cactus pear plant, which adapts to hot and dry climates, is an underutilised alternative food source that can serve as a healthy vegetable. It thrives in many environments such as deserts, below sea level, high altitude regions and tropical regions with temperatures above 50 degrees C. Nopalitos are a traditional staple vegetable and have been consumed in Mexico for over 9000 years. However, it is underutilised and unknown as an alternative vegetable in Africa. Research on the physiochemical and nutritional content has been conducted. However, the information on harvesting nopalitos from cultivars available in South Africa for optimal edible quality is not available. Good quality nopalitos are young, thin, bright green, soft, fresh and not too sour or slimy. This paper aims to identify the effect of and the interaction between size, cultivar and harvesting season to obtain optimal eating quality. Data were obtained for two cultivars (Morado and Fusicaulis) at 9 cm, 12 cm, 15 cm, 18 cm, 21 cm and 24 cm, which were harvested in spring (October) and autumn (March) over two years. The quality characteristics were translated into the measurable attributes of morphology (weight, width, diameter, volume and surface area), texture (firmness and compressibility), colour (L, a, b, Cand h degrees), turgidity (moisture content, mucilage yield and viscosity) and gustatory (percentage titratable acidity, pH and total soluble solids). ANOVA and Principal Component Analyses were performed to determine significant differences and interactions between the length groups, two cultivars and two seasons. The results showed that the size, cultivar and season influenced the edible characteristics. Both cultivars were most tender at 15 cm and presented the best edible qualities in spring. Morado showed better colour, turgidity and gustatory qualities. Morado was thinner, a brighter green colour, less sour and less slimy compared to Fusicaulis nopalitos. (C) 2021 Published by Elsevier B.V. on behalf of SAAB.
英文关键词	Opuntia ficus-indica Cladodes Nopal Prickly pears Underutilised vegetables Alternative vegetables Drought-resilient crops New food alternatives Unknown food sources Sustainable agriculture Sustainable food systems
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000701900700024
WOS关键词	OPUNTIA-FICUS-INDICA ; FOOD SECURITY ; CLADODES ; SPP. ; FRUITS ; PATTERNS ; WILD ; SOIL
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364720
作者单位	[Du Toit, Alba; Mpemba, Onele; De Wit, Maryna] Univ Free State, Sustainable Food Syst & Dev, POB 339, ZA-9301 Bloemfontein, South Africa; [Venter, Sonja L.] Agr Res Council Vegetable & Ornamental Plants, Private Bag X293, Pretoria, South Africa; [Hugo, Arnold] Univ Free State, Dept Anim Sci, Bloemfontein, South Africa
推荐引用方式 GB/T 7714	Du Toit, Alba,Mpemba, Onele,De Wit, Maryna,et al. The effect of size, cultivar and season on the edible qualities of nopalitos from South African cactus pear cultivars[J],2021,142:459-466.
APA	Du Toit, Alba,Mpemba, Onele,De Wit, Maryna,Venter, Sonja L.,&Hugo, Arnold.(2021).The effect of size, cultivar and season on the edible qualities of nopalitos from South African cactus pear cultivars.SOUTH AFRICAN JOURNAL OF BOTANY,142,459-466.
MLA	Du Toit, Alba,et al."The effect of size, cultivar and season on the edible qualities of nopalitos from South African cactus pear cultivars".SOUTH AFRICAN JOURNAL OF BOTANY 142(2021):459-466.