Showing posts with label food quality. Show all posts
Showing posts with label food quality. Show all posts

Sunday, July 5, 2020

کیفیت توت زمینی


کیفیت توت زمینی
این میوه در اواسط بهار در دسترس مردم قرار می گیرد و به دلیل قیمت زیاد باید قبل از خرید از کیفیت و مزه ی آن با خبر شد. رنگ این میوه باید سرخ شفاف باشد. اگر لکه های سفید یا سبز رنگ پیدا کردید بدانید که توت زمینی کیفیت لازم را ندارد. از دیگر راه های تشخیص توت زمینی خوب و رسیده عطر بسیار خوب آن است. میوه را بو کنید، اگر بوی آن همانند مزه ی آن بود کیفیتش مناسب است.


چگونه کیفیت و تازگی توت زمینی حفظ شود ؟
نگهداری توت زمینی در مکان مناسب با حرارت مناسب مهمترین شرط حفظ کیفیت و تازگی این محصول است.
برای اینکه توت زمینی با ظاهری زیبا بدون له شدگی و ضربه خوردگی به بازار عرضه شود باید در چیدن ان دقت کافی شود. این میوه باید با ظرافت و دقت خاصی با سه انگشت به ارامی از بوته چیده شود و بدون وارد کردن هر نوع فشار در ظرف قرار گیرد و عاجل درجه حرارت آن پایین آورده شود و پس از بسته شدن در ظرف ان را در یخچال با حرارت یک تا دو درجه سانتی گراد نگهداری شود. این کار سبب می شود ارزش مواد غذایی موجود در توت زمینی حفظ شود. برای حفظ تازگی میوه رطوبت ۹۰-۹۵ در صد ضرورت است. 

سید محمد نعیم خالد - ماستر علوم غذا و زارعت


Wednesday, May 7, 2014

How to recognize quality saffron ?



Otherwise known as "red gold" and well known in cooking, saffron is the world's most expensive spice. But, as an object of desire it can also be a victim of fraud. Low quality saffron is often traded on international markets, and the specifications for pure saffron are not always respected. So, what is saffron worthy of its name? 

Extracted from the pistils of the crocus flower, it is the harvest method for saffron that is behind its high value.

Dr. A. Jayathilak, Chairman of the ISO subcommittee ISO/TC 34/SC 7, spices, culinary herbs and condiments, explained: "Saffron is mostly grown in a belt of land ranging from Mediterranean in the west to Kashmir in the east. It is a unique crop because each stigma needs to be picked by hand, one by one. Its high value has made saffron the object of frequent adulteration".

Standards help detect fraud
Dr. A. Jayathilak, Chairman of the ISO subcommittee ISO/TC 34/SC 7
However, a number of ISO standards can help fight against this fraud and help recognize quality saffron producers. Saffron is considered to be pure when it complies with the requirements of the standard ISO 3632 and when no external matter has been added to the natural product.

The two parts of the standard, ISO 3632-1:2011 and ISO 3632-2:2010, specify test methods for the different categories of dried saffron included powder, filaments and cut filaments.

The standards are useful for analyzing the strength of the spice's flavour, aroma and colour as without these, the fake saffron has no culinary value. In addition, they help laboratories to detect if the saffron is pure or not, that is to say if foreign matters are detected in the product.

Fraud happens more often with the powdered saffron as less expensive spices can be added to increase the mass. Not drying the saffron properly is another way of pushing the price up, as of course the more humid the powder the more it will weigh, so the standard also helps determine the level of humidity. In addition, it recommends how the saffron should be packaged in order to protect it from environmental effects.

Certified saffron helps protect consumers
"The many techniques for saffron fraud is a permanent problem for consumers. The difference in quality between saffron from different places and the subsequent fluctuation of prices have brought in much confusion. Therefore the quality of saffron is certified in the international trade market following the ISO 3632," Dr. A. Jayathilak explained.

Facts and figures
  • Saffron could reach about 30 000 euros/kg
  • About 250,000 flowers are needed for 1 kg of saffron
  • About 5,000kg of crocus bulbs are needed per hectare
  • 1 stigma of saffron weights about 2 mg and each flower has 3 stigmata
  • Iran is the biggest saffron producer in the world with 109 tonnes in 2011

- Sayed Naim KHALID

Saturday, December 14, 2013

beef mixed with horse meat - EU scandal

In one of the bigger food related stories of early 2013, it was reported that horse meat was found in processed meat products labelled as beef in Irish and British supermarkets. In some cases, the amount of horse meat substituted for beef was as much as 100%.

While it’s clearly deceptive for food companies to label a product one thing when it’s actually another, this page will explore what the difference is between beef and horse meat nutritionally.
The ethics of horse meat consumption is a personal matter. And though it’s definitely one you should have a choice in, if you choose to eat cheap processed ‘meat’, it could be argued that you’re not really that concerned with what you’re eating anyway. You’ll see why ahead.

For now, even though it may be distasteful to some, what are the actual nutritional differences between beef and horse meat (assuming just this time that they really are what they are labelled as)?

Calories

According to nutritional data, 100 grams of cooked horse meat contains 175 calories, with 55 of those calories coming from fat.
By comparison, 100 grams of standard ground beef with 30% fat has 273 calories with 164 of those coming from fat.
While you may be able to find processed beef products with less than 30% fat, unless they are specifically labelled (and we’ve seen just how well that works) the fat percentage can be even higher.

Fat Content

Horse meat is listed to be containing only 6 grams of fat per hundred grams, 2 grams of saturated fat and 64 mg of cholesterol. It’s not surprising, with most horses eating more grass than processed grain pellets, that their meat would be relatively low-fat.
Ground beef is listed as having 18 grams of fat in total, with 7 grams of saturated fat and 1 gram of trans fat. Total cholesterol is 82 mg.

Intensive cattle production uses lots of fattening grain pellets as the primary feed and often synthetic hormones to speed up the animal’s weight gain. Cattle fed grain as their main diet will always be much higher in fat compared to those that are grass fed.

Protein

The protein content of horse meat is around 28 grams per 100 grams, making this a high protein food.
Ground beef is comparable, though a little lower, with 25 grams per 100 gram serving.

Vitamins and Minerals

The levels of certain vitamins and mineral in horse meat are quite high. It is a particularly rich source of iron and it also has good amounts of the minerals zinc, selenium and phosphorus and of the B vitamins niacin, B6 and B12.

Ground beef is also considered a good source of iron, though it is significantly lower than horse meat, with less than half the content. Zinc and selenium are higher in ground beef though and it also contains a good concentration of most of the B vitamins.

Should You Eat Horse?

While at truly insignificant levels compared to beef consumption, horse meat is eaten in many European countries like France, Germany and Italy. In specialty butchers across Europe you can find meat from horses sold alongside other more commonly known animal foods.
So should you eat horse meat? If you don’t personally have any moral objections to eating horse and you can find it humanely slaughtered in one of these specialty butchers, then I think the nutritional information on horse meat above has shown it is actually healthier than regular beef.
Unfortunately, horse meat’s nutritional value and what you actually end up with in the vast majority of processed meat products are two completely different things.

The Problem with Processed Meat

The recent horse meat scandal has provided some interesting insights into the way food companies source their processed meat. The horse meat found in the UK and Irish ready meals was originally sourced in Romania and Poland by a Dutch company (this Wikipedia article has the whole twisted tale) and tracing the source of the various different animal parts in a product can be difficult.
A more significant problem though is the potentially dangerous additives used in the manufacture of processed meat products, particularly sodium nitrite which can lead to the creation of carcinogenic substances.

In 2012, the World Cancer Research Fund released a review of over 7000 studies into the dietary causes of cancer. The report said ‘eating even a small amount of processed meats on a regular basis increases our bowel cancer risk’. And on the routinely used additive sodium nitrite, that it can ‘damage the DNA in our cells’.
Another study by the University of Hawaii concluded that regular processed meat consumption increases your risk of pancreatic cancer by 67%. And diabetes researchers at Harvard University have discovered the compounds like nitrites and nitrates in processed meat interfere with the proper secretion of insulin and increase your risk of developing diabetes.
Processed meat has other health issues worth considering too, such as the amount of actual meat in it. Off cuts of the slaughtered carcass that cannot be sold in any other form are generally used and many of us wouldn’t really recognise what’s ground up to make these products as real meat.
In fact, the horse meat found in the frozen ‘beef’ lasagne and ‘beef’ pasta products would have almost certainly been by far and away the highest quality meat in the mix.

Conclusion

If you really are concerned about what you’re eating, you might want to look into just how processed meat is actually made. Many nutritional experts would say whether it is beef or horse meat is the least of your problems if you are eating processed meat regularly.




sanck foods



What is a snack food? “snack” as “a light meal, food eaten between regular meals, food suitable for snacking.” A leftover from last evening’s home or restaurant meal, an afternoon bowl of breakfast cereal or cookies and milk for children returning from school in midafternoon are all properly named “snacks.”

However, what if there are only a few “regular meals” during the day? Scheduling regular meals could be challenging when parents (or a single parent) and children leave home at different times for work and school, especially when lunches are primarily eaten away from home and when activities for the children occupy weekday evenings and sometimes weekends as well. Our society sometimes lacks a structured time schedule for meals. Food is often purchased at drive-through windows and consumed alone in vehicles. Often, office workers take coffee and sometimes microwave popcorn to their desks at lunchtime. Snacks are then a convenient food for people on the go. Snacks are mainly eaten for craving and should not be considered a “meal.”

In general, snacks should have several characteristics, such as being safe and free of hazardous chemicals, other toxic substances and pathogenic organisms as defined by several federal laws and enforced by various agencies. Snacks are typically prepared commercially in large quantities by continuous processes; they are usually seasoned with salt and often with additional flavorings. Current regulation requires that snacks be shelf stable as well, requiring no refrigeration for preservation, packaged in a ready-to-eat fashion, typically divided into bite-size pieces, easily handled with the fingers and may have an oily or dry appearance depending on customer expectations for the specific product.

Tuesday, December 10, 2013

Foods with low bad fat

There are several foods rich in fat that are affecting your health. Therefore,  to avoid the health risk of such foods, eat foods that has less bad fats. So seeing this picture will help you choose some of them and help in your healthy life. Eat well, stay well.
- Naim KHALID

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