Posts Tagged “strawberries”
The anthocyanin-rich nature of strawberries may help improve insulin sensitivity, according to a new study published in the February issue of Molecular Nutrition and Food Nutrition. The finding is important because research has shown prolonged insulin resistance (IR) can lead to Type 2 diabetes.
Researchers gave obese adults with insulin resistance a meal high in fat and carbohydrates paired with a beverage that contained freeze-dried whole strawberry powder (equivalent to 3 cups of strawberries) to test the effects of anthocyanins, Subjects who drank the most concentrated versions of the strawberry drink produced less insulin.
Thanks to the strawberry shake, it appeared the body didn’t need much insulin to metabolize their meal. Researchers note that while the exact reason strawberries have this effect remains unclear, it may be that anthocyanins alter insulin signaling at a cellular level.
Strawberries are listed as one of the top ten superfoods to be included in a diabetes meal plan by The American Diabetes Association lists. Low in sugar — but loaded with antioxidants, fiber, and vitamins — strawberries are a highly beneficial berry for both diabetics and non-diabetics.
Experts say eating just eight medium-sized strawberries a day may improve heart health, help manage diabetes, support brain health, and reduce the risk of some cancers.
rw
Young consumers are more likely to buy peaches than older people, and those 18- to 24-year-olds prefer crisp, firm peaches with good flavor, a new University of Florida study shows.
In fact, people aged 51 to 68 are the least interested in buying peaches. Those of that age who do buy peaches prefer sweet, melting-texture peaches. Although they did not study the reason older people don’t like peaches as much, UF/IFAS scientists think older consumers may have repeatedly bought poor-quality peaches in the past, triggering an interest in other fruits.
Overall, consumers want sweet, tasty peaches that melt in your mouth, she said.
In the newly published study titled: “In Pursuit of the Perfect Peach,” Olmstead led an experiment in which 300 consumers took an online survey, then sampled peaches at two Florida farmers’ markets.
The study showed the “ideal peach” depended on combinations of fruit qualities. Peaches labeled as “so sweet … no sugar was needed” were most likely be purchased, reflecting what previous UF/IFAS research has found about strawberries and blueberries.
Furthermore, like the prior UF/IFAS research on blueberries, even though peaches are known to contain antioxidants, consumers buy them more for their taste than their nutritive value, the study showed.
Although consumers wanted sweet, absolute sugar concentrations, there is something other than sweetness that leads to overall liking, the study showed. It could be acid content and aromas, Olmstead said.
Most consumers prefer melting peaches, but small segments also like crisp and firm fruit, the study showed.
Salmonella can grow on bruised blueberries kept at shipping or retail display temperatures, according to a new study in the Journal of Food Protection. The study was conducted by researchers at the Department of Food Science and Human Nutrition, Citrus Research and Education Center at the Institute of Food and Agricultural Sciences at the University of Florida,
Strawberries and blueberries harvested at or near full-ripe maturity and softer than those that are not as ripe and therefore more susceptible to bruising during harvest and transport. The researchers wanted to see how E. coli O157:H7 and Salmonella behaved on bruised fruit and intact fruit at shipping temperature, 35.6˚ F, and retail display 59.9˚ F. So they The bruised the berries inoculated them with bacteria and observed.
They found that the E. coli O157:H7 and Salmonella did not grow on strawberries at shipping or retail display temperatures. But that Salmonella did grow on bruised fully ripe blueberries at retail display temperatures.
Salmonella causes an infection called salmonellosis. Symptoms include abdominal cramps, fever, vomiting and diarrhea that can be bloody.
Touting fresh U.S. blueberries and California strawberries as key ingredients, Wendy’s restaurants are again offering berry almond chicken salads.
The fast food restaurant chain plans to buy 2 million pounds of strawberries and 1 million pounds of blueberries from now through September to meet customer demands for the seasonal salad, according to a news release from the Dublin, Ohio-based company.
Wendy’s officials hinted in the release that unseasonable weather in berry growing regions of the U.S. had an effect on the timing of the reintroduction of the berry almond salad.
“Thank goodness berries are ripening on the vine — at last,” Derek Detenber, Wendy’s vice president of brand management, said in the release.
The the salads include 11 types of field greens, in addition to fresh berries, providing a total of three servings of vegetables and one serving of fruit, according to the release. As with its other fresh produce items, Wendy’s employees slice fresh strawberries for the salads at individual restaurants.
Salads have been on the menu at Wendy’s for almost 35 years, with the chain selling more than 100 million salads in the U.S. in 2012, according to the news release. In 2012 Zagat rated Wendy’s salads as No. 1 in the fast food category, beating out Panaera, Chipolte and Subway.
Hauling fresh produce tends to provide much higher freight rates than dry freight, obviously because of the perishability of fresh fruits and vegetables, and the extra care required with temperature, humdity, air circulation in the load, etc.
The higher risk to which truckers are exposed, also includes the possibilites of claims that reduce a driver’s pay check, or even worse, having the load rejected.
The degree of exposure to problems upon arrival at destination can depend on the honesty and integrity of the parties involved. Did the shipper pre-cool the product? Did the driver maintain proper temperature settings? Did the buyer or receiver pay too much for that product five days ago when the order was placed, and now the fruit on the market is worth $2 a box less? All of these examples can lead to claims or rejections with produce loads.
There have been studies over the years including the recent one titled Comparison of Pallet Cover Systems to Maintain Strawberry Fruit Quality During Transport which provides some interesting information. For example, this research concludes that TransFresh Corp’s Tectrol process reduces fruit decay by increasing carbon dioxide (CO2) levels in pallets covered by bags.
With CO2 levels increased by 11 to 16 percent, Tectrol beats its competitors in the important area of decay in strawberries by up to seven percent following delivery and two days on the shelf.
So how does this translate into a reduction in claims and load rejections for the produce trucker, if there is less decay in product being transported?
“That’s an interesting equation,” states Rich Macleod of TransFresh Corp. , Salinas, CA. “No one will ever talk about that. No one gives us their data. We’ve never been able to prove that (fewer claims, rejected loads), because we get it (information) by hersay.”
Macleod says experienced drivers know if they pick up a load of strawberries covered with bags, they are confident there will be no problems with that load. The expert in controlled atmosphere loads has been told by retailers “…their strawberry program is much easier” since using Tectrol.
However, when he asks that customer for data relating to load rejection and claims for strawberries comparing shipments with and without CO2 infused bagged pallets, he hits a stone wall. Those receivers acknowledge the benefits of Tectrol, but refuse to provide any statistics.
(This is the last of a 6-part series featuring an interview with Rich Macleod, vice president, pallet division North America for TransFresh Corp., Salinas, CA. He has been with company since 1976, and has a masters degree in post harvest science from the University of California, Davis.)
While studies have shown transporting strawberries and some other produce items in a modified atmosphere extends the quality and lifespan of the items, how safe are these food items to eat that have been exposed to carbon dioxide (CO2) for nearly a week?
Rich Macleod, a scientist and basically the manager of the pallet divison for Transfresh Corp. feels this is a reasonable question for people to ask.
“The use of carbon dioxide in the handling of perishables is incredibally common,” Macleod states. He points to the use of CO2 in soda, which are the bubbles you see.
As for TransFresh, Macleod says the Organic Material Research Institute has certified the Tectrol application as organic. “So we are certified for use as an organic product,” he states. “The impact of CO2 in terms of maintaining the quality of the product….using a gas we breath in the environment, is an excellent trade off for what you get for enjoying more strawberries.”
As previously reported in this series, using the pallet covered system, Tectrol (CO2), results in less decay in strawberries (see chart).
Macleod, who started out as a lab assistant with a masters degree in post harvest science, sees the next step in research being to define what CO2 does for the nutrient value of strawberries. Such a study has never been done, he notes. He is hopeful such research will take place within the next five years.
While Tectrol’s primary use is with strawberries, it also is used with raspberries, blueberries and other items.
However, it also is found in containers on shipments by boat with items such as avocados, asparagus, and stone fruit for both imports and exports that are in transit eight to 10 days.
“Your cut salads are all cousins to the wrapped pallet program (with modified atmospheres). In fact, the cut salad program preceeded the pallet covered program,” Macleod says.
(This is Part 5 0f 6, featuring an interview with Rich Macleod, vice president, pallet division North America for TransFresh Corp., Salinas, CA. He has been with company since 1976, and has a masters degree in post harvest science from the University of California, Davis.)
(Note: This was originally planned as a five-part series, but is now turning into a 6-part series as I keep finding more information that is not only interesting, but I believe can be of great value to you as a produce trucker. Also, the latest strawberry purchase at my local Wal-Mart, was again this season, a frustrating experience. While the berries had good color protected in the clamshell container, they turned out to be soft and spongy once I got home and opened it.
Part IV of this series, may provide a clue why my strawberry purchase was disappointing, and why your delivery of some strawberries, may be cost you a claim or rejection at destination. — Bill Martin)
For example, several produce shippers of fresh strawberries choose to use a non-sealed bag type system, according to Rich Macleod of TransFresh Corp., Salinas, CA, whose product is Tectrol.
In this series, I have used information from a study by the University of California, Davis/University of Florida study showing the advantages for truckers who have strawberry loads with palletized sealed bags using carbon dioxide (CO2). The study also is quite favorable to TransFresh. I’m referring to the research, Comparison of Pallet Cover Systems to Maintain Strawberry fruit Quality During Transit.
If I had not known Rich Macleod for years, being familar with his work, his concern for produce truckers and in general his honesty and integrity, plus his impressive career, I might be a bit wary of a study conducted in part by his alma mater, UC Davis, that is favorable to his company.
However, there was another study commissioned by PEAKfresh, a competitor of TransFresh. It was conducted by the Horticulture and crop Science Department at Cal Poly State University, San Luis Obispo, entitled, Comparison of the Efficacy of the PEAKfresh and Tectrol Systems for Maintaining Strawberry Quality.
This study can be found on both the PEAKfresh and TransFresh websites.
In part the research states, “Berries in PEAKfresh treated pallets became softer on average than berreis in the Tectrol treated pallets during cross-country shipments, and this is in agreement with previous research on the effect of elevated CO2 on strawberry firmness.”
Additionally the PEAKfresh commissioned study notes after a two-day shelf life, fruit from the Tectrol pallet system exhibited significantly less decay, from 3% to 7% than other systems evaluated.
So if research is showing that non-sealed pallet/bag systems results in more softness and decay in strawberries, why doesn’t everyone use the sealed system?
Rich Macleod says, “There is a significant price difference between an unsealed bag and a sealed MAP system (Tectrol). Obviously there is a lot more sophistication in materials, equipment and man power to create a sealed MAP.”
Macleod has been told the open bag systems cost around $8 to $12-plus per bag, while Tectrol charges its shippers $19.25 per service.
“Prices can range from $24/pallet to $30/pallet for either bag or service,” Macleod says.
Continuing, he states, “First off, if you are using the open bag system, you are not injecting any CO2. If you are using MAP (Tectrol), you not only are injecting CO2 or other gasses, you are trying to keep those gasses contained or sealed inside the system.”
Thus, Macleod wants the Tectrol CO2 levels to hit between 10% and 18% inside the sealed Tectrol bag upon arrival at destination. Thus, this process requires more material, specialized bags, sealing tape, CO2 injection machinery, etc.
So for obvious reasons, the Tectrol process costs a shipper more money, and apparently some shippers would rather risk strawberry quality shipped to customers, than pay more.
The old saying, “you pay for what you get” certainly seems to apply to modified atmosphere shipments of strawberries.
“Shippers who recommend and sell open bags enjoy a significant cost advatange over those recommending and selling a MAP like Tectrol. However, as a retailer, given the UC Davis data, why would you pay the same for an open bag service as a true MAP service,” Macleod asks.
And I, as a consumer, am wondering if Wal-Mart or their suppliers are not trying to cut corners on what they pay for strawberries because those berries are trucked across country in unsealed bags. It is the peak strawberry season, and I can’t seem to buy any decent strawberries!
(This is Part 4 0f 6 featuring an interview with Rich Macleod, vice president, pallet division North America for TransFresh Corp., Salinas, CA. He has been with the company since 1976, and has a masters degree in post harvest science from the University of California, Davis.)
California is now shipping an astounding 7 million trays of strawberries per week, which should set another record for loadings by the time the season ends. Most loadings are taking place from the Santa Maria area and the Watsonville district.
The Salinas Valley continues to ship a wide variety of vegetables. Head lettuce loadings are providing the heaviest volume, averaging about 1,500 truckloads per week. However, there’s lots of other items ranging from various types of lettuce, to cauliflower, broccoli, etc.
Kern County
This week most potato sheds should be hitting full production. Shipments of fresh potatoes from the southern region of the San Joaquin Valley should continue into early July.
There has been a 10%-plus drop in acreage of reds, whites and yellow spuds. More specifically: whites are down 13%; reds, as well as yellows are off 12%. The nationally over produced (thanks primarily to Idaho) russet acreage in Kern County is down a whopping 65 percent.
Russet acreage in Kern County has dropped to about 1,000 acres from a high of 12,000 to 14,000 acres about 20 years ago.
While Kern County shippers are predicting enough transportation with trucks, rail, intermodal and Railex, they say it will be expensive.
Kern County potatoes and carrots – grossing about $5200 to Chicago.
Salinas Valley veggies – about $7300 to New York City.
In this series we have been covering a number of issues and answers coming out of the study Comparison of Pallet Cover Systems to Maintain Strawberry Quality During Transport.
The study was conducted by the University of California, Davis and The University of Florida.
While a primary goal of the study is to find better ways to have produce with better quality and flavor delivered from the field to the kitchen shelf, transportation plays a key role in this.
Rich Macleod of TransFresh Corp. describes this as a “global process” where it must be considered that actions taken during the entire handling process can influence even the best varieties of product that end up in the hands of the consumer.
“The study confirms my private belief, plus our private research over the years,” he says. “If you do these processes correctly; cool it, transport correctly with good temperature control, with a CO2 atmosphere, you are going to deliver better fruit to the consumer.”
In the report, it details strawberry shipments with palletized loads covered with bags and carbon dioxide (CO2). The transcontential shipments compared the modified atmosphere shipments of CO2 West, PEAKfresh, PrimePro and Tectrol (TransFresh).
The results of the study may show why Tectrol is the dominant supplier of bagged, controlled atmosphere shipments out of California. Macleod says over half of the California harvested strawberries in California are shipped using the Tectrol process by TransFresh. California also grows and ships the vast majority of the nation’s strawberries.
The summary of the study’s findings probably explains why many strawberries look great when shipped and still are beautiful when displayed in your local supermarket. However, how many times have you purchased strawberries in the store and no sooner get home and notice quality problems occuring (a common experience with yours truely, the purveyor of this website)?
The study summarizes, “The Tectrol cover was sealed to the pallet base, a partial vacuum was applied, and pressurized CO2 gas was injected inside….CO2 concentrations within pallets at the beginning and end of transport were higher (11% to 16%) in the sealed Tectrol system and relatively low (.06% to .30% in the open CO2 West, PEAKfresh and PrimePro cover systems.”
Continuing, the report states, “The incident of fruit decay was low (1% to 1.4%) after transport, but increased substantially following a 2-day shelf life at 68 degrees. However, fruit from the Tectrol pallets exhibited significantly less decay (36%) after shelf life than the CO2 West (39%), non covered (pallets)(41%), PrimePro (42%) and PEAKfresh (43%).”
(This is Part 3 0f 5, featuring an interview with Rich Macleod, vice president, pallet division North America for TransFresh Corp., Salinas, CA. He has been with company since 1976, and has a masters degree in post harvest science from the University of California, Davis.)
Here’s a round up of some loading and coming loading opportunities in Florida, Georgia and South Carolina, where produce shipments have been slower gaining momentum due to temperatures below normal.
Florida
Tomato shipments have pretty much finished in the Immokalee area and have shifted to the Palmetto-Ruskin district. Loadings were very light at the beginning of May, but now volume is picking up. Due to weather conditions some disease problems have appeared, so be watchful what you are putting on the truck.
Florida watermelons like it hot and cool weather has put shipments behind schedule. Watermelon loadings should be hitting good volume by the end of May.
Mixed vegetables also continue to be shipped.
Georgia
Blueberry shipments continue to increase from Georgia as new acreage comes into production each year. In fact, the state is now one of the leading shippers of “blues.” Georgia should have about 70 million pounds of blueberries, which equals about 1,750 truckload equivalents.
Georgia has about 22,000 acres of blueberries. Shipments, which have been underway a couple of weeks, are now moving into volume.
Like other produce items, a cool spring has delayed Georgia peach shipments. There should be around 1.8 to 2 million, 25 pound cartons of peaches for hauling this season. Good quality and normal volume is predicted. Shipments should continue into mid-August.
Vidalia onion shipments are lower due to weather and disease, but moderate volume continues from Southeastern Georgia. Mixed veggies from Central and Southern Georgia also continue.
South Carolina
Despite cold and wet weather prections for South Carolina strawberries, shipments are good. Strawberry loadings usually end in May, but this year are expected to continue through June.
South Carolina peach loadings also look promising. Light shipments get underway in a few weeks. Florida mixed vegetable loads – grossing about $3200 to Chicago.