37 extractive question-and-answer pairs built from Heat Treatment on Fruits, published by agritech.tnau.ac.in. Every answer is a verbatim span of text the source prints, and each row carries the passage it sits in, its offset in that passage, the source quote, the page and the location in the document, so any row can be checked against the original. 27 of the 37 pairs (73.0%) are explanatory questions and 10 restate a figure. 100.00% of rows pass the corpus quality gate.
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First 10 of 37 rows
| question | answer | context | answer_start | question_type | knowledge_quality_score | source_quote | source_page | source_location | confidence | validation_status |
|---|---|---|---|---|---|---|---|---|---|---|
| What is the main challenge in applying heat treatments to fruits and vegetables? | the sensitivity of fruits and vegetables to the temperatures required for effective treatments | Commercial heat treatment applications In some cases the industry has found obstacles to incorporate heat treatments on commercial settings. A primary limitation is the sensitivity of fruits and vegetables to the temperatures required for effective treatments. Product heat tolerance varies depending on species, cultivars, maturity, size, environmental and/or preharvest factors, and method of application. | 165 | definition | 1.000 | A primary limitation is the sensitivity of fruits and vegetables to the temperatures required for effective treatments. | 4 | page=4,block=3 | 0.850 | valid |
| What determines the temperature and time combinations used in insect disinfestation protocols? | the lethality to all stages of the pest life cycle | severe heat damage was observed on the fruit treat- ed after coating formation. To eliminate the risk of entry of insect pests associated with fruit, importing countries’ may require insect disinfestation treatments. Although chemical fumigation has been used for years, legislative pressure is encouraging the use of heat treatments. The combina- tions of temperature-time for disinfestation protocols is deter- mined by the lethality to all stages of the pest life cycle that might | 422 | definition | 1.000 | The combina- tions of temperature-time for disinfestation protocols is deter- mined by the lethality to all stages of the pest life cycle that might | 3 | page=3,block=6 | 0.700 | valid |
| What was suggested as the role of wax in influencing flavor during heat treatment? | wax may act to restrict the exit of volatile compounds from the fruit | Waxing the fruit before treatment greatly increased the nega- tive effects of the heat treatment on flavor, although waxing after treatment did not. It was hypothesized that wax may act to restrict the exit of volatile compounds from the fruit that form quickly in response to heat treatment and cause off-flavor. The concentration of four esters was considerably enhanced by the heat treatment, and two of them, ethyl hexanoate and ethyl butanoate, may con- tribute to the loss in flavor quality. Knowing that aroma volatiles can have a decisive influence on consumer response, Singh et al. | 174 | definition | 1.000 | It was hypothesized that wax may act to restrict the exit of volatile compounds from the fruit that form quickly in response to heat treatment and cause off-flavor. | 4 | page=4,block=3 | 0.700 | valid |
| What are Initial purchases? | based on appearance and freshness, but flavor enjoyment is essential for repeat purchases | Impacts on sensory quality Worldwide efforts of scientists and producers are devoted to meet- ing consumer demand for produce with excellent quality traits. Initial purchases are based on appearance and freshness, but flavor enjoyment is essential for repeat purchases. In the past, most re- searchers assumed that physico-chemical parameters such as TSS, TA, firmness and volatile compounds were good indicators of fruit ripeness and taste. | 179 | definition | 0.980 | Initial purchases are based on appearance and freshness, but flavor enjoyment is essential for repeat purchases. | 3 | page=3,block=6 | 0.850 | valid |
| Why is there growing interest in environmentally-friendly postharvest management methods? | the use of synthetic fungicides, perceived as harm- ful to human health and to the environment | Since then, multiple additional benefits such as chilling tolerance, extension of shelf life and preservation of fruit quality have been revealed. The increasing concern about the use of synthetic fungicides, perceived as harm- ful to human health and to the environment, is contributing to the growing interest in the development of environmentally- friendly methods for postharvest management. Apart from reduc- ing the dependence on agrochemicals, heat treatments possess the appealing advantage of being relatively simple to apply, as they can sometimes be incorporated into packinghouse sorting lines. | 176 | relationship | 0.970 | The increasing concern about the use of synthetic fungicides, perceived as harm- ful to human health and to the environment, is contributing to the growing interest in the development of environmentally- friendly methods for postharvest management. | 1 | page=1,block=2 | 0.700 | valid |
| Why can high temperatures or long treatment durations cause harm to commodities? | deleterious effects of excessive heat on cell physiology | Perceived as safe and friendly, there is a collective interest in these methods from the fresh fruit and vegetable industry; organic markets and produce exporters could particularly benefit from these techniques. Heat is generally applied as a short treatment preceding cold storage. There are five main types of application: 1) forced air, 2) vapor, 3) water baths, 4) water rinsing and 5) water rinsing with brushing. The protocol for each type varies depending on the fruit species, cultivar, size, harvest maturity and growing conditions. Because of the known deleterious effects of excessive heat on cell physiology, temperatures too high and/or times too long could easily cause damage to the commodity. | 564 | relationship | 0.970 | Because of the known deleterious effects of excessive heat on cell physiology, temperatures too high and/or times too long could easily cause damage to the commodity. | 1 | page=1,block=2 | 0.700 | valid |
| What are the potential negative impacts of heat treatments on fruit quality? | seriously damage fruit sensory quality, causing deterioration of flavor and aroma, and therefore, consumer rejection | This article describes the most relevant studies in the recent literature and their implication for the fruits and vegetables industry. Main findings: Appropriate time-temperature combinations may reduce chilling injury and control decay, without impairing ripening or physico-chemical quality. The induced mechanisms could be enhanced and extended by combination with addi- tional substances and/or beneficial organisms such as methyl jasmonate, ethanol and/or yeast antagonists. recent studies have shown that heat treatments can seriously damage fruit sensory quality, causing deterioration of flavor and aroma, and therefore, consumer rejection. Further research is needed to successfully integrate heat treatments into the commercial postharvest chains. | 532 | relationship | 0.970 | recent studies have shown that heat treatments can seriously damage fruit sensory quality, causing deterioration of flavor and aroma, and therefore, consumer rejection. | 1 | page=1,block=8 | 0.700 | valid |
| What impact can a proper balance of temperature and time have on fruits? | benefit ripening and postharvest quality | Effect on physico-chemical and nutritional quality Fresh fruits and vegetables are living tissues that are subject to biological activity before and after harvest. Some activities are desirable, and result in adequate firmness, color and biochemical traits; most of them are not and lead to breakdown and death of plant cells. These processes cannot be stopped, but they can be slowed within certain limits. Either for short-term storage, as a mere link between harvest and market, or long-term storage, to extend marketing beyond the end of the season, techniques that slow ripening and delay senescence are indispensable tools to maintain fruit quality. Heat treatments have been proven to modi- fy quality traits; an adequate combination of temperature-time could benefit ripening and postharvest quality. | 767 | relationship | 0.970 | Heat treatments have been proven to modi- fy quality traits; an adequate combination of temperature-time could benefit ripening and postharvest quality. | 3 | page=3,block=3 | 0.700 | valid |
| What problems prompted the re-evaluation of postharvest treatments for certain new mango varieties? | high susceptibility shown by some new mango varieties to lenticel dis- coloration and to Alternaria side rots and Phomopsis stem-end rot | the high susceptibility shown by some new mango varieties to lenticel dis- coloration and to Alternaria side rots and Phomopsis stem-end rot led Feygenberg et al. [31*] to re-evaluate all postharvest treatments, from the orchard to the packinghouse. | 4 | relationship | 0.970 | the high susceptibility shown by some new mango varieties to lenticel dis- coloration and to Alternaria side rots and Phomopsis stem-end rot led Feygenberg et al. | 4 | page=4,block=3 | 0.700 | valid |
| What was suggested for papaya treatments longer than 3 min? | these longer treatments could be appropriate when the papa- ya fruit is destined for processing outlets | applications for longer than 3 min led to irregular skin color while maintaining pulp quality. The authors suggested that these longer treatments could be appropriate when the papa- ya fruit is destined for processing outlets, since there was a signifi- cant delay in decay development. Ornelas-Paz et al. [23] were interested in high-humidity hot-air treatments. | 122 | relationship | 0.970 | The authors suggested that these longer treatments could be appropriate when the papa- ya fruit is destined for processing outlets, since there was a signifi- cant delay in decay development. | 3 | page=3,block=3 | 0.700 | valid |
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