Effects of the Postharvest Storage Temperature and its Fluctuations on the Keeping Quality of Agaricus Bisporus

2006 ◽  
Vol 2 (1) ◽  
Author(s):  
Jiying Zhu ◽  
Xiangyou Wang ◽  
Yingchao Xu
Keyword(s):  
Relative Humidity ◽  
Temperature Fluctuation ◽  
Agaricus Bisporus ◽  
Storage Temperature ◽  
Postharvest Storage ◽  
Postharvest Physiology ◽  
Respiration Intensity ◽  
Keeping Quality ◽  
Lower Temperature

Effects of storage temperature and temperature fluctuation on postharvest physiology and quality of Agaricus bisporus were studied. The results have shown that lower temperature with higher relative humidity can reduce the cap opening percentage of postharvest Agaricus bisporus, weakening its respiration intensity and inhibiting PPO activity and degree of browning; temperature fluctuation during storage may increase the physiology activities of Agaricus bisporus, which speeds up the after-ripening and senescence.

scholarly journals (44) Postharvest Physiology and Quality of Pigeon Pea [Cajanus cajan (L.) Millsp.]

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1030B-1030
Author(s):  
Annette Wszelaki ◽  
Karla Deza-Duran ◽  
Carol Harper
Keyword(s):  
Storage Temperature ◽  
Titratable Acidity ◽  
Pigeon Pea ◽  
Soluble Solids ◽  
Postharvest Physiology ◽  
Keeping Quality ◽  
Fresh Frozen ◽  
Alternative Markets ◽  
Market Premium

Pigeon pea is an important food crop for the Puerto Rican diet, as well as the economy. Pigeon pea ranks fourth in production among edible legumes in production worldwide. It can be consumed dried or as a vegetable (fresh, frozen, or canned). Canned, frozen, and dried peas are commonly used when fresh peas are no longer available. Due to the preferred flavor of fresh pigeon pea, it commands a higher market premium, selling for more than twice the price of the dried product. Although there is a great demand for this vegetable in Puerto Rico, virtually no research has been done on fresh pigeon pea postharvest physiology and its overall keeping quality. Baseline data on pigeon pea physiology, including respiration and ethylene production rates, soluble solids, titratable acidity, color reflectance, chlorophyll content, and responses to ethylene are presented here in order to establish the optimum storage temperature. Using this information, fresh pigeon pea consumption could increase locally, and exporting opportunities for shipping pigeon pea to alternative markets could be expanded.

California Almond Shelf Life: Changes in Moisture Content and Textural Quality During Storage

2019 ◽  
Vol 62 (3) ◽  
pp. 661-671 ◽  
Author(s):  
Jia Wu ◽  
Xiangyang Lin ◽  
Shengnan Lin ◽  
Paul Chen ◽  
Guangwei Huang ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Storage Temperature ◽  
Initial Moisture Content ◽  
Textural Properties ◽  
Storage Conditions ◽  
Temperature And Humidity ◽  
Lower Temperature ◽  
And Storage ◽  
Over Time

Abstract. The effects of packaging and storage conditions on the moisture content and instrumental and sensory textural properties of raw and salty light roasted (SLR) California almonds were studied under different storage conditions. The controlled combinations included low, medium, and high temperatures and low and high relative humidity (RH). Almond samples were packaged in cartons or polyethylene (PE) bags with and without vacuum. Both absorption and desorption of moisture by almonds were observed during storage and were dependent on the packaging and storage conditions. In general, gradual changes were observed for samples with PE and vacuum PE packaging in most of the storage conditions, while the samples packed in cartons showed more dramatic changes because these unprotected samples were more vulnerable to seasonal changes in humidity. The SLR almonds showed consistent moisture gains, while the raw almonds tended to lose moisture content in most of the storage conditions. This may be attributed to the low initial moisture content of the SLR samples. All raw samples packed in cartons became softer over time. The softening tended to be enhanced by high storage humidity and temperature. The raw almonds packaged in PE bags were firmer than those packed in cartons but also became softer over time. The firmness of the SLR samples was generally lower than that of raw samples, probably because roasting reduced the density and mechanical strength of the kernels. The firmness of PE packaged SLR samples increased in uncontrolled storage conditions and in higher storage temperature and humidity conditions but decreased slightly in lower temperature and humidity conditions. Vacuum packaging did not affect the firmness much. Using PE packaging and maintaining the RH below 50% and the temperature below 25°C are effective in stabilizing both raw and processed almonds. Keywords: Almond, Firmness, Nonpareil, Packaging, Relative humidity, Sensory, Storage, Temperature, Texture.

FACTORS AFFECTING THE STORAGE OF DEHYDRATED PORK

1945 ◽  
Vol 23f (1) ◽  
pp. 9-21
Author(s):  
Jesse A. Pearce
Keyword(s):  
Storage Temperature ◽  
Storage Test ◽  
Factors Affecting ◽  
Accelerated Storage ◽  
Relative Value ◽  
Keeping Quality ◽  
P 16 ◽  
One Year ◽  
Accelerated Storage Test

In an accelerated storage test at 60 °C. fat levels of 20 and 30% were observed to have no effect on keeping quality of dehydrated pork. Measurements on dried product stored in paper-bodied containers for one year at temperatures from −17.8 °C. to 36.7 °C. showed 15.6 °C. to be less desirable than 23.9°, 0°, or −17.8 °C. Dehydrated pork was stored in tin-plate containers for periods of one year at 23.9 °C. and 36.7 °C. with little decrease in palatability. No difference in storage life was demonstrated between cured and uncured pork, or, as a result of differences in drying times, moisture content |or storage temperature. The product prepared on an atmospheric double-drum drier deteriorated a little more rapidly than vacuum–tray- or tunnel–tray-dried material. The effectiveness of container materials, tin-plate, Reynolds' metal A-10, Dewey and Almy P-16, and 300 MST cellophane, was evaluated and their relative value for dehydrated pork fell in that order.

EFFECT OF PROCESSING AND STORAGE ON THE QUALITY OF GELOSE FROM IRISH MOSS (CHONDRUS CRISPUS)

1948 ◽  
Vol 26f (3) ◽  
pp. 160-167
Author(s):  
D. MacDougall
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
East Coast ◽  
Storage Temperature ◽  
Chondrus Crispus ◽  
Irish Moss ◽  
Optimum Ph ◽  
Processing And Storage ◽  
And Storage

Irish moss (Chondrus crispus) from Canada's east coast was used to study possible improvements in the production and storage of gelose. The optimum pH for the extraction of gelose from Irish moss was between 6 and 7. Fine leaf particles, which prevent rapid filtration, were readily removed by supercentrifuging. Comparison of drum drying and drying from the frozen state showed that the former caused a marked lowering of viscosity but had little effect on suspending power or jelly strength. The logarithm of the viscosity determined by means of a MacMichael viscosimeter was related directly to the concentration; therefore, viscosity measurements can be corrected for the moisture content of the samples. The effect of storage temperature on deterioration was greater than the effect of relative humidity. Samples stored at 0° and 40° F. for 12 weeks showed no significant changes in viscosity or suspending power, whereas those stored at 80° and 120° F. deteriorated very rapidly. Material was vacuum ice-dried to 2% moisture without damage but the quality decreased when the extracts were stored at high temperatures.

Integrated Treatment of CaCl2 , Citric Acid and Sorbitol Reduces Loss of Quality of Button Mushroom (Agaricus Bisporus ) during Postharvest Storage

2015 ◽  
Vol 39 (6) ◽  
pp. 2008-2016 ◽  
Author(s):  
Zia Ullah Khan ◽  
Jianwen Bu ◽  
Nasir Mehmood Khan ◽  
Rahat Ullah Khan ◽  
Zhenhui Jiang ◽  
...  
Keyword(s):  
Citric Acid ◽  
Agaricus Bisporus ◽  
Integrated Treatment ◽  
Postharvest Storage ◽  
Button Mushroom

DRIED WHOLE EGG POWDER: VI. EFFECT OF STORAGE TEMPERATURE AND GAS PACKING ON KEEPING QUALITY

1943 ◽  
Vol 21d (9) ◽  
pp. 271-276 ◽  
Author(s):  
W. Harold White ◽  
M. W. Thistle ◽  
Margaret Reid
Keyword(s):  
Carbon Dioxide ◽  
Beneficial Effect ◽  
Potassium Chloride ◽  
Storage Temperature ◽  
Keeping Quality ◽  
Egg Powder ◽  
Whole Egg

Dried whole egg powders were obtained from three different manufacturers and stored at temperatures ranging from 7.1° to 32.1 °C. for periods up to six months. Quality was assessed by determination of fluorescence and potassium chloride values. At 23.8 °C. the rate of deterioration was comparatively rapid; at 32.1 °C. it was markedly so. To maintain quality during storage and transport dried egg should be stored at a temperature of 15.6 °C. or lower.The effect on keeping quality of packing in nitrogen, carbon dioxide, in vacuo, or in the form of compressed tablets was studied. Carbon dioxide alone had beneficial effect.

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