MATURITY & QUALITY
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https://drbatayneh.com/retina-vitreoretinal-disorders/ Spinach is selected for size and maximal recovery of clean leaves that are mid-maturity to young. Older and yellowing leaves are avoided when making the harvest cut. Generally 3-4 weeks of re-growth are required before a second harvest will yield adequate volume.
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https://gritandgracefamilyfarm.com/the-doghouse/australian-shepherds/ Spinach, whether bunched or as leaves, should be uniformly green (generally not yellow-green), fully turgid, fairly clean, and free from serious damage. For bunched spinach, roots should be trimmed short to grade standards and petioles should be predominantly shorter than the leaf blade.
go to link U.S. Grades: Bunched — U.S. No. 1, No. 2 (Oct. 1987). Leaves — U.S. Extra No. 1, No. 1, Commercial (Dec. 1946)
TEMPERATURE & CONTROLLED ATMOSPHERE
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source link 0°C (32°F); 95-98% R.H.
Zolpidem Online Order Spinach is highly perishable and will not maintain good quality for more than 2 weeks. Wilting, yellowing of leaves, and decay are likely to increase following storage beyond 10-14 days; faster at common distribution conditions of 5 to10°C (41 to 50°F).
https://bettierose.co.uk/307_baker_fotor/ In a 1994 UC Davis study, an average of 17, 28, and 45% of leaves of 16 varieties had decay after 2, 3, and 4 weeks at 5°C, respectively. After the same periods at 5°C, 18, 25, and 45% of the leaves showed some yellowing. Commercial varities such as Imperial Spring, Shasta, Polka, Spectrum and Sporter had notably longer shelf- life than did varieties Bossanova, Spark and Space.
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| Temperature °C |
Temperature °F |
ml CO2/kg·hr |
| 0 | 32 | 9-11 |
| 5 | 41 | 17-29 |
| 10 | 50 | 41-69 |
| 15 | 59 | 67-111 |
| 20 | 68 | 86-143 |
here To calculate heat production, multiply ml CO2/kg·hr by 440 to get BTU/ton/day or by 122 to get kcal/metric ton /day.
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https://www.52editions.com/introduction/ < 0.1µl / kg·hr at 20°C (68°F)
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Ambien No Prescription Spinach is highly sensitive to exogenous ethylene. Accelerated yellowing will result from low levels of ethylene during distribution and short-term storage. Do not mix loads such as apples, melons and tomatoes with spinach.
go to link Responses to Controlled Atmosphere (CA)
Atmospheres of 7-10% O2 and 5-10% CO2 offer moderate benefit to spinach by delaying yellowing. Spinach is tolerant to higher CO2 concentration but no increase in benefits has been observed. Package film for prewashed spinach leaves is selected to maintain 1-3% O2 and 8-10% CO2.
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