The ORAC value, which indicates the antioxidant capacity is about 5 to 10 times superior to commercial factory vegetables.

What is the Orac value?

It's an analysis and quantification of the ability of the seventh nutrient "antioxidant" (antioxidant components such as vitamins C and E and polyphenols, excluding carotinoids), which is effective in removing active oxygen that accelerates aging.

A contest to support women who "shine from the inside and outside, regardless of age"
Mrs. International 2019 Finalist Active as a model, beautiful legs & beautiful skin advisor Chie Takada (50s)

Daily beauty and health supported by “high antioxidant lettuce”

At this age, I was reminded of the importance of cleaning the body from the inside. After suffering from an illness last year, I became very conscious of the saying "you are what you eat." Now, my feelings have become clear, "It's better to eat something of high quality whenever you can."
However, the process will not continue unless it is an ingredient that is easy to incorporate every day. Lettuce is eaten almost every day, so it's good to be able to continue without difficulty.
Actually, I thought all lettuce in plant factories were the same, but there is a clear difference between them. Premium keihanna lettuce has no bitterness, it has a strong aroma and flavor. It's crispy and delicious, it's easy to eat because it doesn't need to be washed, and it lasts for a long time. Everything is good about it! Stay clean and healthy from the inside out. I think that “high antioxidant value” is an important keyword for activities that transcend age.

Mainly responsible for the production and sale of lettuce and Japanese mustard spinach at YASAI * Co., Ltd. Registered dietitian.

Mami Nakamura (30's) * Partner companies that have introduced our equipment and cultivation technology.

Lettuce seen and nurtured by both a dietitian and a pregnant woman

When I heard about factory vegetables, I had the image that machines were producing them piece by piece, but in the end it was the same as the ones produced by a real farmer! It is hygienic, is properly cultivated at each stage of growth, and is of high quality. When you start cultivating your own vegetables, the vegetables you produce are cute and there is no doubt about the taste and quality. I have come to strongly want everyone to know their value.
A registered dietitian's perspective that intersects with the producer's perspective. I have been involved in nutrition guidance, health guidance, menu management, classes, and product development of convenience store side dishes at various sites such as hospitals, high schools, manufacturers, and government. I would like to convey that through the plant factory business.
When people are busy in their daily lives, they tend to neglect eating. Overdose and under dose lead to an imbalanced diet, which in turn leads to pressure on medical expenses. On the other hand, if you rely on supplements, your intestinal function will decrease, making it difficult for your body to absorb nutrients. In order to improve intestinal function and efficiently digest and absorb nutrients, it is best to take in nutrients in a natural form from food.
The best way to improve the function of the intestines and allow them to be digested and absorbed efficiently is to take in nutrients from food in a natural way.

Product development that takes advantage of the housewife's perspective

Conducting a questionnaire centered on women: What is important in enjoying vegetables, what are the nutrients contained in vegetables that you are concerned about, and are you aware of the lack of nutrients and are you consciously taking them? Do you take supplements on a regular basis, if so, what are your expectations regarding their benefits (detoxing, skin beautification, anti-aging, lifestyle-related diseases, etc.)
By grasping the needs of housewives who take care of family health and women who are conscious of food, we have determined the direction of taste, nutritional value and quality.

Tasting questionnaire survey

"There is no harshness and you can feel the sweetness."
"The taste of vegetables is strong"
"It's rare for children to eat a lot."
"It was the first time I finished my meal."
"The first time I was able to eat without dressing"
"Nature that does not rely on supplements is good"

Research contract with Kyoto Prefectural University

For a five-year period from March 2016 to March 2021, we signed a commissioned research contract, technical guidance, and quality evaluation with Kyoto Prefectural University at the Kyoto Prefectural University Industry-Academia-Public Collaborative Research Center Green Innovation Facility and Plant Research Building. We have been promoting the establishment of mass-production cultivation technology for antioxidant vegetables and the development, design, and manufacture of cultivation plants.
From September 2022, we have entered into a new joint research agreement with Kyoto Prefectural University to strengthen industry-academia collaboration in the research field.

Health functionality of vegetables, fruits and crops

About the need to increase antioxidant levels in vegetables

Vegetables and fruits contain antioxidants, which help prevent various diseases by eliminating reactive oxygen species (ROS) generated in the body.
Therefore, in order to maintain good health, it is internationally recommended to consume about 350g (five servings) of vegetables and fruits daily.

Quoted from Kyoto Prefectural University Next Generation Plant Factory Research Project

Why is high concentration a problem?

Nitrate of leaf lettuce by conventional hydroponics: about 6000-9000 (ppm) or more

・It has been pointed out that nitrite may change to a nitroso compound, which is a carcinogen, when it binds to amines in foods (under acidic conditions such as in the stomach).

・It has been pointed out that nitrite may bind to hemoglobin and cause methemoglobinemia, which is one of the respiratory disorders.

The EU has set a maximum nitrate content standard (1997)

High levels of nitrates are also a major cause of harsh taste


3,000ppm(winter crop)・2,500ppm(summer crop)

Head lettuce

2,500ppm(Cultivation in a facility)・2,000ppm(Open‐field culture)